diff --git a/.github/workflows/luacheck.yml b/.github/workflows/luacheck.yml
new file mode 100644
index 0000000..a13efa9
--- /dev/null
+++ b/.github/workflows/luacheck.yml
@@ -0,0 +1,13 @@
+name: luacheck
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: apt
+      run: sudo apt-get install -y luarocks
+    - name: luacheck install
+      run: luarocks install --local luacheck
+    - name: luacheck run
+      run: $HOME/.luarocks/bin/luacheck ./
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
deleted file mode 100644
index ff51e7e..0000000
--- a/.gitlab-ci.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-stages:
-  - test
-
-luacheck:
- stage: test
- image: pipelinecomponents/luacheck:latest
- script:
-  - luacheck .
diff --git a/.luacheckrc b/.luacheckrc
index 85eba0b..494507e 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -19,6 +19,7 @@ read_globals = {
 
 	-- mods
 	"default", "mesecon", "digiline",
-	"screwdriver", "unified_inventory"
+	"screwdriver", "unified_inventory",
+	"i3",
 
 }
diff --git a/README b/README
index 8b74b76..ea834f2 100644
--- a/README
+++ b/README
@@ -1,7 +1,7 @@
 This mod uses nodeboxes to supply a complete set of 3D pipes and tubes, 
 along devices that work with them.
 
-See https://gitlab.com/VanessaE/pipeworks/wikis/ for detailed information about usage of this mod.
+See https://github.com/mt-mods/pipeworks/wiki/ for detailed information about usage of this mod.
 
 Unlike the previous version of this mod, these pipes are rounded, and when 
 placed, they'll automatically join together as needed.  Pipes can go vertically 
@@ -20,3 +20,7 @@ This mod is a work in progress.
 
 Please note that owing to the nature of this mod, I have opted to use 64px 
 textures.  Anything less just looks terrible.
+
+The teleport tube database used to be kept in a file named 'teleport_tubes'.
+The database is now kept in mod storage. The migration from 'teleport_tubes' is
+automatic. The old file is then kept around but is not used at all.
diff --git a/autocrafter.lua b/autocrafter.lua
index a415071..71589ce 100644
--- a/autocrafter.lua
+++ b/autocrafter.lua
@@ -100,37 +100,49 @@ local function calculate_consumption(inv_index, consumption_with_groups)
 end
 
 local function autocraft(inventory, craft)
-	if not craft then
-		return false
-	end
-	local output_item = craft.output.item
-
-	-- check if we have enough room in dst
-	if not inventory:room_for_item("dst", output_item) then
-		return false
-	end
-
-	-- get required items and index inventory
+	if not craft then return false end
+	-- check if we have enough material available
 	local inv_index = count_index(inventory:get_list("src"))
 	local consumption = calculate_consumption(inv_index, craft.consumption)
 	if not consumption then
 		return false
 	end
-
 	-- check if we have enough material available
 	for itemname, number in pairs(consumption) do
 		if (not inv_index[itemname]) or inv_index[itemname] < number then return false end
 	end
-
+	-- check if output and all replacements fit in dst
+	local output = craft.output.item
+	local out_items = count_index(craft.decremented_input.items)
+	out_items[output:get_name()] = (out_items[output:get_name()] or 0) + output:get_count()
+	local empty_count = 0
+	for _,item in pairs(inventory:get_list("dst")) do
+		if item:is_empty() then
+			empty_count = empty_count + 1
+		else
+			local name = item:get_name()
+			if out_items[name] then
+				out_items[name] = out_items[name] - item:get_free_space()
+			end
+		end
+	end
+	for _,count in pairs(out_items) do
+		if count > 0 then
+			empty_count = empty_count - 1
+		end
+	end
+	if empty_count < 0 then
+		return false
+	end
 	-- consume material
-	for itemname, number in pairs(consumption) do
+	for itemname, number in pairs(craft.consumption) do
 		for _ = 1, number do -- We have to do that since remove_item does not work if count > stack_max
 			inventory:remove_item("src", ItemStack(itemname))
 		end
 	end
 
 	-- craft the result into the dst inventory and add any "replacements" as well
-	inventory:add_item("dst", output_item)
+	inventory:add_item("dst", output)
 	for i = 1, 9 do
 		inventory:add_item("dst", craft.decremented_input.items[i])
 	end
@@ -249,27 +261,47 @@ end
 local function update_meta(meta, enabled)
 	local state = enabled and "on" or "off"
 	meta:set_int("enabled", enabled and 1 or 0)
-	local fs = 	"size[8,12]"..
-			"list[context;recipe;0,0;3,3;]"..
-			"image[3,1;1,1;gui_hb_bg.png^[colorize:#141318:255]"..
-			"list[context;output;3,1;1,1;]"..
-			"image_button[3,2;1,0.6;pipeworks_button_" .. state .. ".png;" .. state .. ";;;false;pipeworks_button_interm.png]" ..
-			"list[context;src;0,4.5;8,3;]"..
-			"list[context;dst;4,0;4,3;]"..
-			default.gui_bg..
-			default.gui_bg_img..
-			default.gui_slots..
-			default.get_hotbar_bg(0,8) ..
-			"list[current_player;main;0,8;8,4;]" ..
-			"listring[current_player;main]"..
-			"listring[context;src]" ..
-			"listring[current_player;main]"..
-			"listring[context;dst]" ..
-			"listring[current_player;main]"
+	local list_backgrounds = ""
+	if minetest.get_modpath("i3") then
+		list_backgrounds = "style_type[box;colors=#666]"
+		for i=0, 2 do
+			for j=0, 2 do
+				list_backgrounds = list_backgrounds .. "box[".. 0.22+(i*1.25) ..",".. 0.22+(j*1.25) ..";1,1;]"
+			end
+		end
+		for i=0, 3 do
+			for j=0, 2 do
+				list_backgrounds = list_backgrounds .. "box[".. 5.28+(i*1.25) ..",".. 0.22+(j*1.25) ..";1,1;]"
+			end
+		end
+		for i=0, 7 do
+			for j=0, 2 do
+				list_backgrounds = list_backgrounds .. "box[".. 0.22+(i*1.25) ..",".. 5+(j*1.25) ..";1,1;]"
+			end
+		end
+	end
+	local size = "10.2,14"
+	local fs =
+		"formspec_version[2]"..
+		"size["..size.."]"..
+		pipeworks.fs_helpers.get_prepends(size)..
+		list_backgrounds..
+		"list[context;recipe;0.22,0.22;3,3;]"..
+		"image[4,1.45;1,1;[combine:16x16^[noalpha^[colorize:#141318:255]"..
+		"list[context;output;4,1.45;1,1;]"..
+		"image_button[4,2.6;1,0.6;pipeworks_button_" .. state .. ".png;" .. state .. ";;;false;pipeworks_button_interm.png]" ..
+		"list[context;dst;5.28,0.22;4,3;]"..
+		"list[context;src;0.22,5;8,3;]"..
+		pipeworks.fs_helpers.get_inv(9)..
+		"listring[current_player;main]"..
+		"listring[context;src]" ..
+		"listring[current_player;main]"..
+		"listring[context;dst]" ..
+		"listring[current_player;main]"
 	if minetest.get_modpath("digilines") then
-		fs = fs.."field[0.3,3.5;4.5,1;channel;"..S("Channel")..";${channel}]"..
-			"button[4.5,3.2;1.5,1;set_channel;"..S("Set").."]"..
-			"button_exit[6,3.2;2,1;close;"..S("Close").."]"
+		fs = fs.."field[0.22,4.1;4.5,0.75;channel;"..S("Channel")..";${channel}]"..
+			"button[5,4.1;1.5,0.75;set_channel;"..S("Set").."]"..
+			"button_exit[6.8,4.1;2,0.75;close;"..S("Close").."]"
 	end
 	meta:set_string("formspec",fs)
 
@@ -329,7 +361,8 @@ minetest.register_node("pipeworks:autocrafter", {
 	description = S("Autocrafter"),
 	drawtype = "normal",
 	tiles = {"pipeworks_autocrafter.png"},
-	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1},
+	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1, dig_generic = 1, axey=5},
+	_mcl_hardness=1.6,
 	tube = {insert_object = function(pos, node, stack, direction)
 			local meta = minetest.get_meta(pos)
 			local inv = meta:get_inventory()
@@ -354,8 +387,7 @@ minetest.register_node("pipeworks:autocrafter", {
 		update_meta(meta, false)
 	end,
 	on_receive_fields = function(pos, formname, fields, sender)
-		if not fields.channel or (fields.quit and not fields.key_enter_field)
-				or not pipeworks.may_configure(pos, sender) then
+		if (fields.quit and not fields.key_enter_field) or not pipeworks.may_configure(pos, sender) then
 			return
 		end
 		local meta = minetest.get_meta(pos)
@@ -506,12 +538,3 @@ minetest.register_node("pipeworks:autocrafter", {
 	},
 })
 pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:autocrafter"
-
-minetest.register_craft( {
-	output = "pipeworks:autocrafter 2",
-	recipe = {
-	        { "default:steel_ingot", "default:mese_crystal", "default:steel_ingot" },
-	        { "basic_materials:plastic_sheet", "default:steel_ingot", "basic_materials:plastic_sheet" },
-	        { "default:steel_ingot", "default:mese_crystal", "default:steel_ingot" }
-	},
-})
diff --git a/common.lua b/common.lua
index 207b728..1161ba6 100644
--- a/common.lua
+++ b/common.lua
@@ -143,6 +143,56 @@ function fs_helpers.cycling_button(meta, base, meta_name, values)
 	return base..";"..(texture_name and texture_name..";" or "")..field..";"..minetest.formspec_escape(text)..(addopts and ";"..addopts or "").."]"
 end
 
+function fs_helpers.get_inv(y)
+	local fs = {}
+	if minetest.get_modpath("i3") then
+		local inv_x = i3.settings.legacy_inventory and 0.75 or 0.22
+		local inv_y = (y + 0.4) or 6.9
+		local size, spacing = 1, 0.1
+		local hotbar_len = i3.settings.hotbar_len or (i3.settings.legacy_inventory and 8 or 9)
+		local inv_size = i3.settings.inv_size or (hotbar_len * 4)
+
+		table.insert(fs, "style_type[box;colors=#77777710,#77777710,#777,#777]")
+
+		for i = 0, hotbar_len - 1 do
+			table.insert(fs, "box["..(i * size + inv_x + (i * spacing))..","..inv_y..";"..size..","..size..";]")
+		end
+
+		table.insert(fs, "style_type[list;size="..size..";spacing="..spacing.."]")
+		table.insert(fs, "list[current_player;main;"..inv_x..","..inv_y..";"..hotbar_len..",1;]")
+
+		table.insert(fs, "style_type[box;colors=#666]")
+		for i=0, 2 do
+			for j=0, hotbar_len - 1 do
+				table.insert(fs, "box["..0.2+(j*0.1)+(j*size)..","..(inv_y+size+spacing+0.05)+(i*0.1)+(i*size)..";"..size..","..size..";]")
+			end
+		end
+
+		table.insert(fs, "style_type[list;size="..size..";spacing="..spacing.."]")
+		table.insert(fs, "list[current_player;main;"..inv_x..","..(inv_y + 1.15)..";"..hotbar_len..","..(inv_size / hotbar_len)..";"..hotbar_len.."]")
+	else
+		table.insert(fs, "list[current_player;main;0.22,"..y..";8,4;]")
+	end
+
+	return table.concat(fs, "")
+end
+
+function fs_helpers.get_prepends(size)
+	local prepend = {}
+
+	if minetest.get_modpath("i3") then
+		prepend = {
+			"no_prepend[]",
+			"bgcolor[black;neither]",
+			"background9[0,0;"..size..";i3_bg_full.png;false;10]",
+			"style_type[button;border=false;bgimg=[combine:16x16^[noalpha^[colorize:#6b6b6b]",
+			"listcolors[#0000;#ffffff20]"
+		}
+	end
+
+	return table.concat(prepend, "")
+end
+
 ---------
 -- Env --
 ---------
@@ -183,7 +233,7 @@ function pipeworks.create_fake_player(def, is_dynamic)
 		is_player = delay(true),
 		is_fake_player = true,
 
-		_formspec = def.formspec or default.gui_survival_form,
+		_formspec = def.formspec or "",
 		_hp = def.hp or 20,
 		_breath = 11,
 		_pos = def.position and table.copy(def.position) or vector.new(),
diff --git a/compat-chests.lua b/compat-chests.lua
index 2da00ea..0448660 100644
--- a/compat-chests.lua
+++ b/compat-chests.lua
@@ -11,33 +11,72 @@ local tube_entry = "^pipeworks_tube_connection_wooden.png"
 -- Chest Locals
 local open_chests = {}
 
-local function get_chest_formspec(pos)
-	local spos = pos.x .. "," .. pos.y .. "," .. pos.z
-	local formspec =
-		"size[8,9]" ..
-		default.gui_bg ..
-		default.gui_bg_img ..
-		default.gui_slots ..
-		"list[nodemeta:" .. spos .. ";main;0,0.3;8,4;]" ..
-		"list[current_player;main;0,4.85;8,1;]" ..
-		"list[current_player;main;0,6.08;8,3;8]" ..
-		"listring[nodemeta:" .. spos .. ";main]" ..
-		"listring[current_player;main]" ..
-		default.get_hotbar_bg(0,4.85)
+local get_chest_formspec
 
-	-- Pipeworks Switch
-	formspec = formspec ..
-		fs_helpers.cycling_button(
-			minetest.get_meta(pos),
-			pipeworks.button_base,
-			"splitstacks",
-			{
-				pipeworks.button_off,
-				pipeworks.button_on
-			}
-		)..pipeworks.button_label
+if minetest.get_modpath("default") then
+	function get_chest_formspec(pos)
+		local spos = pos.x .. "," .. pos.y .. "," .. pos.z
+		local formspec =
+			"size[8,9]" ..
+			default.gui_bg ..
+			default.gui_bg_img ..
+			default.gui_slots ..
+			"list[nodemeta:" .. spos .. ";main;0,0.3;8,4;]" ..
+			"list[current_player;main;0,4.85;8,1;]" ..
+			"list[current_player;main;0,6.08;8,3;8]" ..
+			"listring[nodemeta:" .. spos .. ";main]" ..
+			"listring[current_player;main]" ..
+			default.get_hotbar_bg(0,4.85)
 
-	return formspec
+		-- Pipeworks Switch
+		formspec = formspec ..
+			fs_helpers.cycling_button(
+				minetest.get_meta(pos),
+				pipeworks.button_base,
+				"splitstacks",
+				{
+					pipeworks.button_off,
+					pipeworks.button_on
+				}
+			)..pipeworks.button_label
+
+		return formspec
+	end
+else
+	local function get_hotbar_bg(x,y)
+		local out = ""
+		for i=0,7,1 do
+			out = out .."image["..x+i..","..y..";1,1;gui_hb_bg.png]"
+		end
+		return out
+	end
+
+	function get_chest_formspec(pos)
+		local spos = pos.x .. "," .. pos.y .. "," .. pos.z
+		local formspec =
+			"size[10,9]" ..
+			"background9[8,8;8,9;hades_chests_chestui.png;true;8]"..
+			"list[nodemeta:" .. spos .. ";main;0,0.3;10,4;]" ..
+			"list[current_player;main;0,4.85;10,1;]" ..
+			"list[current_player;main;0,6.08;10,3;10]" ..
+			"listring[nodemeta:" .. spos .. ";main]" ..
+			"listring[current_player;main]" ..
+			get_hotbar_bg(0,4.85)
+
+		-- Pipeworks Switch
+		formspec = formspec ..
+			fs_helpers.cycling_button(
+				minetest.get_meta(pos),
+				pipeworks.button_base,
+				"splitstacks",
+				{
+					pipeworks.button_off,
+					pipeworks.button_on
+				}
+			)..pipeworks.button_label
+
+		return formspec
+	end
 end
 
 local function chest_lid_obstructed(pos)
@@ -71,7 +110,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 					end
 				end
 				minetest.after(0.2, function()
-					minetest.swap_node(pos, { name = "default:" .. swap, param2 = node.param2 })
+					if minetest.get_modpath("default") then
+						minetest.swap_node(pos, { name = "default:" .. swap, param2 = node.param2 })
+					end
 
 					-- Pipeworks notification
 					pipeworks.after_place(pos)
@@ -88,10 +129,18 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 end)
 
 -- Original Definitions
-local old_chest_def = table.copy(minetest.registered_items["default:chest"])
-local old_chest_open_def = table.copy(minetest.registered_items["default:chest_open"])
-local old_chest_locked_def = table.copy(minetest.registered_items["default:chest_locked"])
-local old_chest_locked_open_def = table.copy(minetest.registered_items["default:chest_locked_open"])
+local old_chest_def, old_chest_open_def, old_chest_locked_def, old_chest_locked_open_def
+if minetest.get_modpath("default") then
+	old_chest_def = table.copy(minetest.registered_items["default:chest"])
+	old_chest_open_def = table.copy(minetest.registered_items["default:chest_open"])
+	old_chest_locked_def = table.copy(minetest.registered_items["default:chest_locked"])
+	old_chest_locked_open_def = table.copy(minetest.registered_items["default:chest_locked_open"])
+elseif minetest.get_modpath("hades_chests") then
+	old_chest_def = table.copy(minetest.registered_items["hades_chests:chest"])
+	old_chest_open_def = table.copy(minetest.registered_items["hades_chests:chest"])
+	old_chest_locked_def = table.copy(minetest.registered_items["hades_chests:chest_locked"])
+	old_chest_locked_open_def = table.copy(minetest.registered_items["hades_chests:chest_locked"])
+end
 
 -- Override Construction
 local override_protected, override, override_open, override_protected_open
@@ -116,9 +165,11 @@ override_protected = {
 		minetest.sound_play(old_chest_locked_def.sound_open, {gain = 0.3,
 				pos = pos, max_hear_distance = 10})
 		if not chest_lid_obstructed(pos) then
-			minetest.swap_node(pos,
-					{ name = "default:" .. "chest_locked" .. "_open",
-					param2 = node.param2 })
+			if minetest.get_modpath("default") then
+				minetest.swap_node(pos,
+						{ name = "default:" .. "chest_locked" .. "_open",
+						param2 = node.param2 })
+			end
 		end
 		minetest.after(0.2, minetest.show_formspec,
 				clicker:get_player_name(),
@@ -160,9 +211,11 @@ override = {
 		minetest.sound_play(old_chest_def.sound_open, {gain = 0.3, pos = pos,
 				max_hear_distance = 10})
 		if not chest_lid_obstructed(pos) then
-			minetest.swap_node(pos, {
-					name = "default:" .. "chest" .. "_open",
-					param2 = node.param2 })
+			if minetest.get_modpath("default") then
+				minetest.swap_node(pos, {
+						name = "default:" .. "chest" .. "_open",
+						param2 = node.param2 })
+			end
 		end
 		minetest.after(0.2, minetest.show_formspec,
 				clicker:get_player_name(),
@@ -236,8 +289,15 @@ for _,v in ipairs({override_protected, override, override_open, override_protect
 end
 
 -- Override with the new modifications.
-minetest.override_item("default:chest", override)
-minetest.override_item("default:chest_open", override_open)
-minetest.override_item("default:chest_locked", override_protected)
-minetest.override_item("default:chest_locked_open", override_protected_open)
+if minetest.get_modpath("default") then
+	minetest.override_item("default:chest", override)
+	minetest.override_item("default:chest_open", override_open)
+	minetest.override_item("default:chest_locked", override_protected)
+  minetest.override_item("default:chest_locked_open", override_protected_open)
+elseif minetest.get_modpath("hades_chests") then
+	minetest.override_item("hades_chests:chest", override)
+	--minetest.override_item("hades_chests:chest_open", override_open)
+	minetest.override_item("hades_chests:chest_locked", override_protected)
+  --minetest.override_item("hades_chests:chest_locked_open", override_protected_open)
+end
 
diff --git a/compat-furnaces.lua b/compat-furnaces.lua
index 1894056..c4cbd86 100644
--- a/compat-furnaces.lua
+++ b/compat-furnaces.lua
@@ -1,280 +1,28 @@
 -- this file is basically a modified copy of
 -- minetest_game/mods/default/furnaces.lua
 
--- translation support
-local S = minetest.get_translator("pipeworks")
-local DS = minetest.get_translator("default")
-
-local fs_helpers = pipeworks.fs_helpers
+local def--, def_active
+if minetest.get_modpath("default") then
+	def = table.copy(minetest.registered_nodes["default:furnace"])
+	--def_active = table.copy(minetest.registered_nodes["default:furnace_active"])
+elseif minetest.get_modpath("hades_furnaces") then
+	def = table.copy(minetest.registered_nodes["hades_furnaces:furnace"])
+	--def_active = table.copy(minetest.registered_nodes["hades_furnaces:furnace_active"])
+end
 
 local tube_entry = "^pipeworks_tube_connection_stony.png"
 
-local function active_formspec(fuel_percent, item_percent, pos, meta)
-	local formspec =
-		"size[8,8.5]"..
-		default.gui_bg..
-		default.gui_bg_img..
-		default.gui_slots..
-		"list[current_name;src;2.75,0.5;1,1;]"..
-		"list[current_name;fuel;2.75,2.5;1,1;]"..
-		"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
-		(100-fuel_percent)..":default_furnace_fire_fg.png]"..
-		"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[lowpart:"..
-		(item_percent)..":gui_furnace_arrow_fg.png^[transformR270]"..
-		"list[current_name;dst;4.75,0.96;2,2;]"..
-		"list[current_player;main;0,4.25;8,1;]"..
-		"list[current_player;main;0,5.5;8,3;8]"..
-		"listring[current_name;dst]"..
-		"listring[current_player;main]"..
-		"listring[current_name;src]"..
-		"listring[current_player;main]"..
-		"listring[current_name;fuel]"..
-		"listring[current_player;main]"..
-		default.get_hotbar_bg(0, 4.25) ..
-			fs_helpers.cycling_button(
-				meta,
-				"image_button[0,3.5;1,0.6",
-				"split_material_stacks",
-				{
-					pipeworks.button_off,
-					pipeworks.button_on
-				}
-			).."label[0.9,3.51;"..S("Allow splitting incoming material (not fuel) stacks from tubes").."]"
-	return formspec
-end
-
-local function inactive_formspec(pos, meta)
-	local formspec = "size[8,8.5]"..
-	default.gui_bg..
-	default.gui_bg_img..
-	default.gui_slots..
-	"list[current_name;src;2.75,0.5;1,1;]"..
-	"list[current_name;fuel;2.75,2.5;1,1;]"..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
-	"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
-	"list[current_name;dst;4.75,0.96;2,2;]"..
-	"list[current_player;main;0,4.25;8,1;]"..
-	"list[current_player;main;0,5.5;8,3;8]"..
-	"listring[current_name;dst]"..
-	"listring[current_player;main]"..
-	"listring[current_name;src]"..
-	"listring[current_player;main]"..
-	"listring[current_name;fuel]"..
-	"listring[current_player;main]"..
-	default.get_hotbar_bg(0, 4.25) ..
-		fs_helpers.cycling_button(
-			meta,
-			"image_button[0,3.5;1,0.6",
-			"split_material_stacks",
-			{
-				pipeworks.button_off,
-				pipeworks.button_on
-			}
-		).."label[0.9,3.51;"..S("Allow splitting incoming material (not fuel) stacks from tubes").."]"
-	return formspec
-end
-
---
--- Node callback functions that are the same for active and inactive furnace
---
-
-local function can_dig(pos, player)
-	local meta = minetest.get_meta(pos);
-	local inv = meta:get_inventory()
-	return inv:is_empty("fuel") and inv:is_empty("dst") and inv:is_empty("src")
-end
-
-local function allow_metadata_inventory_put(pos, listname, index, stack, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return 0
-	end
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	if listname == "fuel" then
-		if minetest.get_craft_result({method="fuel", width=1, items={stack}}).time ~= 0 then
-			if inv:is_empty("src") then
-				meta:set_string("infotext", DS("Furnace is empty"))
-			end
-			return stack:get_count()
-		else
-			return 0
-		end
-	elseif listname == "src" then
-		return stack:get_count()
-	elseif listname == "dst" then
-		return 0
-	end
-end
-
-local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local stack = inv:get_stack(from_list, from_index)
-	return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
-end
-
-local function allow_metadata_inventory_take(pos, listname, index, stack, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return 0
-	end
-	return stack:get_count()
-end
-
-local function swap_node(pos, name)
-	local node = minetest.get_node(pos)
-	if node.name == name then
-		return
-	end
-	node.name = name
-	minetest.swap_node(pos, node)
-end
-
-local function furnace_node_timer(pos, elapsed)
-	--
-	-- Inizialize metadata
-	--
-	local meta = minetest.get_meta(pos)
-	local fuel_time = meta:get_float("fuel_time") or 0
-	local src_time = meta:get_float("src_time") or 0
-	local fuel_totaltime = meta:get_float("fuel_totaltime") or 0
-
-	local inv = meta:get_inventory()
-	local srclist, fuellist
-
-	local cookable, cooked
-	local fuel
-
-	local update = true
-	while update do
-		update = false
-
-		srclist = inv:get_list("src")
-		fuellist = inv:get_list("fuel")
-
-		--
-		-- Cooking
-		--
-
-		-- Check if we have cookable content
-		local aftercooked
-		cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
-		cookable = cooked.time ~= 0
-
-		-- Check if we have enough fuel to burn
-		if fuel_time < fuel_totaltime then
-			-- The furnace is currently active and has enough fuel
-			fuel_time = fuel_time + elapsed
-			-- If there is a cookable item then check if it is ready yet
-			if cookable then
-				src_time = src_time + elapsed
-				if src_time >= cooked.time then
-					-- Place result in dst list if possible
-					if inv:room_for_item("dst", cooked.item) then
-						inv:add_item("dst", cooked.item)
-						inv:set_stack("src", 1, aftercooked.items[1])
-						src_time = src_time - cooked.time
-						update = true
-					end
-				end
-			end
-		else
-			-- Furnace ran out of fuel
-			if cookable then
-				-- We need to get new fuel
-				local afterfuel
-				fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
-
-				if fuel.time == 0 then
-					-- No valid fuel in fuel list
-					fuel_totaltime = 0
-					src_time = 0
-				else
-					-- Take fuel from fuel list
-					inv:set_stack("fuel", 1, afterfuel.items[1])
-					update = true
-					fuel_totaltime = fuel.time + (fuel_time - fuel_totaltime)
-					src_time = src_time + elapsed
-				end
-			else
-				-- We don't need to get new fuel since there is no cookable item
-				fuel_totaltime = 0
-				src_time = 0
-			end
-			fuel_time = 0
-		end
-
-		elapsed = 0
-	end
-
-	if fuel and fuel_totaltime > fuel.time then
-		fuel_totaltime = fuel.time
-	end
-	if srclist[1]:is_empty() then
-		src_time = 0
-	end
-
-	--
-	-- Update formspec, infotext and node
-	--
-	local formspec = inactive_formspec(pos, meta)
-	local item_state
-	local item_percent = 0
-	if cookable then
-		item_percent = math.floor(src_time / cooked.time * 100)
-		if item_percent > 100 then
-			item_state = DS("100% (output full)")
-		else
-			item_state = DS("@1%", item_percent)
-		end
-	else
-		if srclist[1]:is_empty() then
-			item_state = DS("Empty")
-		else
-			item_state = DS("Not cookable")
-		end
-	end
-
-	local fuel_state = DS("Empty")
-	local active = DS("Furnace inactive")
-	local result = false
-
-	if fuel_totaltime ~= 0 then
-		active = DS("Furnace active")
-		local fuel_percent = math.floor(fuel_time / fuel_totaltime * 100)
-		fuel_state = DS("@1%", fuel_percent)
-		formspec = active_formspec(fuel_percent, item_percent, pos, meta)
-		swap_node(pos, "default:furnace_active")
-		-- make sure timer restarts automatically
-		result = true
-	else
-		if not fuellist[1]:is_empty() then
-			fuel_state = DS("@1%", "0")
-		end
-		swap_node(pos, "default:furnace")
-		-- stop timer on the inactive furnace
-		minetest.get_node_timer(pos):stop()
-	end
-
-	local infotext = active.." "..DS("(Item: @1; Fuel: @2)", item_state, fuel_state)
-
-	--
-	-- Set meta values
-	--
-	meta:set_float("fuel_totaltime", fuel_totaltime)
-	meta:set_float("fuel_time", fuel_time)
-	meta:set_float("src_time", src_time)
-	meta:set_string("formspec", formspec)
-	meta:set_string("infotext", infotext)
-
-	return result
-end
+local groups = def.groups
+groups["tubedevice"] = 1
+groups["tubedevice_receiver"] = 1
+local groups_active = table.copy(groups)
+groups_active["not_in_creative_inventory"] = 1
 
 --
 -- Node definitions
 --
 
-minetest.register_node(":default:furnace", {
-	description = DS("Furnace"),
+local override = {
 	tiles = {
 		"default_furnace_top.png"..tube_entry,
 		"default_furnace_bottom.png"..tube_entry,
@@ -283,7 +31,7 @@ minetest.register_node(":default:furnace", {
 		"default_furnace_side.png"..tube_entry,
 		"default_furnace_front.png"
 	},
-	groups = {cracky = 2, tubedevice = 1, tubedevice_receiver = 1},
+	groups = groups,
 	tube = {
 		insert_object = function(pos, node, stack, direction)
 			local meta = minetest.get_meta(pos)
@@ -311,59 +59,15 @@ minetest.register_node(":default:furnace", {
 			end
 		end,
 		input_inventory = "dst",
-		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
+		connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
 	},
-	paramtype2 = "facedir",
-	legacy_facedir_simple = true,
-	is_ground_content = false,
-	sounds = default.node_sound_stone_defaults(),
 
-	can_dig = can_dig,
-
-	on_timer = furnace_node_timer,
-
-	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
-		meta:set_string("formspec", inactive_formspec(pos, meta))
-		local inv = meta:get_inventory()
-		inv:set_size('src', 1)
-		inv:set_size('fuel', 1)
-		inv:set_size('dst', 4)
-	end,
-
-	on_metadata_inventory_move = function(pos)
-		minetest.get_node_timer(pos):start(1.0)
-	end,
-	on_metadata_inventory_put = function(pos)
-		-- start timer function, it will sort out whether furnace can burn or not.
-		minetest.get_node_timer(pos):start(1.0)
-	end,
-	on_blast = function(pos)
-		local drops = {}
-		default.get_inventory_drops(pos, "src", drops)
-		default.get_inventory_drops(pos, "fuel", drops)
-		default.get_inventory_drops(pos, "dst", drops)
-		drops[#drops+1] = "default:furnace"
-		minetest.remove_node(pos)
-		return drops
-	end,
-	allow_metadata_inventory_put = allow_metadata_inventory_put,
-	allow_metadata_inventory_move = allow_metadata_inventory_move,
-	allow_metadata_inventory_take = allow_metadata_inventory_take,
-	on_receive_fields = function(pos, formname, fields, sender)
-		if not pipeworks.may_configure(pos, sender) then return end
-		fs_helpers.on_receive_fields(pos, fields)
-		local meta = minetest.get_meta(pos)
-		local formspec = inactive_formspec(pos, meta)
-		meta:set_string("formspec", formspec)
-	end,
 	after_place_node = pipeworks.after_place,
 	after_dig_node = pipeworks.after_dig,
 	on_rotate = pipeworks.on_rotate
-})
+}
 
-minetest.register_node(":default:furnace_active", {
-	description = DS("Furnace"),
+local override_active = {
 	tiles = {
 		"default_furnace_top.png"..tube_entry,
 		"default_furnace_bottom.png"..tube_entry,
@@ -381,7 +85,7 @@ minetest.register_node(":default:furnace_active", {
 			},
 		}
 	},
-	groups = {cracky = 2, tubedevice = 1, tubedevice_receiver = 1, not_in_creative_inventory = 1},
+	groups = groups_active,
 	tube = {
 		insert_object = function(pos,node,stack,direction)
 			local meta = minetest.get_meta(pos)
@@ -402,37 +106,23 @@ minetest.register_node(":default:furnace_active", {
 			if direction.y == 1 then
 				return inv:room_for_item("fuel", stack)
 			else
-				if meta:get_int("split_material_stacks") == 1 then
-					stack = stack:peek_item(1)
-				end
 				return inv:room_for_item("src", stack)
 			end
 		end,
 		input_inventory = "dst",
-		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
+		connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
 	},
-	paramtype2 = "facedir",
-	light_source = 8,
-	drop = "default:furnace",
-	legacy_facedir_simple = true,
-	is_ground_content = false,
-	sounds = default.node_sound_stone_defaults(),
-	on_timer = furnace_node_timer,
 
-	can_dig = can_dig,
-
-	allow_metadata_inventory_put = allow_metadata_inventory_put,
-	allow_metadata_inventory_move = allow_metadata_inventory_move,
-	allow_metadata_inventory_take = allow_metadata_inventory_take,
-	on_receive_fields = function(pos, formname, fields, sender)
-		if not pipeworks.may_configure(pos, sender) then return end
-		fs_helpers.on_receive_fields(pos, fields)
-		local meta = minetest.get_meta(pos)
-		local formspec = active_formspec(0, 0, pos, meta)
-		meta:set_string("formspec", formspec)
-	end,
 	after_place_node = pipeworks.after_place,
 	after_dig_node = pipeworks.after_dig,
 	on_rotate = pipeworks.on_rotate
-})
+}
+
+if minetest.get_modpath("default") then
+	minetest.override_item("default:furnace", override)
+	minetest.override_item("default:furnace_active", override_active)
+elseif minetest.get_modpath("hades_furnaces") then
+	minetest.override_item("hades_furnaces:furnace", override)
+	minetest.override_item("hades_furnaces:furnace_active", override_active)
+end
 
diff --git a/crafts.lua b/crafts.lua
index 9c02da8..54e2d6a 100644
--- a/crafts.lua
+++ b/crafts.lua
@@ -1,87 +1,373 @@
+local materials = {
+	stone = "default:stone",
+	desert_stone = "default:desert_stone",
+	desert_sand = "default:desert_sand",
+	chest = "default:chest",
+	copper_ingot = "default:copper_ingot",
+	steel_ingot = "default:steel_ingot",
+	gold_ingot = "default:gold_ingot",
+	mese = "default:mese",
+	mese_crystal = "default:mese_crystal",
+	mese_crystal_fragment = "default:mese_crystal_fragment",
+	teleporter = "default:mese",
+	glass = "default:glass",
+}
+
+if minetest.get_modpath("mcl_core") then
+	materials = {
+		stone = "mcl_core:stone",
+		desert_stone = "mcl_core:sandstone2",
+		desert_sand = "mcl_core:sand",
+		chest = "mcl_chests:chest_small",
+		steel_ingot = "mcl_core:iron_ingot",
+		gold_ingot = "mcl_core:gold_ingot",
+		mese = "default:mese",
+		mese_crystal = "default:mese_crystal",
+		mese_crystal_fragment = "mesecons:redstone",
+		teleporter = "default:mese",
+		-- Use iron where no equivalent
+		copper_ingot = "mcl_core:iron_ingot",
+		glass = "default:glass",
+	}
+elseif minetest.get_modpath("fl_ores") and minetest.get_modpath("fl_stone") then
+	materials = {
+		stone = "fl_stone:stone",
+		desert_stone = "fl_stone:desert_stone",
+		desert_sand = "fl_stone:desert_sand",
+		chest = "fl_storage:wood_chest",
+		steel_ingot = "fl_ores:iron_ingot",
+		gold_ingot = "fl_ores:gold_ingot",
+		mese = "fl_ores:iron_ingot",
+		mese_crystal = "fl_ores:iron_ingot",
+		mese_crystal_fragment = "fl_ores:iron_ingot",
+		teleporter = "fl_ores:iron_ingot",
+		copper_ingot = "fl_ores:copper_ingot",
+		glass = "fl_glass:framed_glass",
+	}
+elseif minetest.get_modpath("hades_core") then
+	materials = {
+		stone = "hades_core:stone",
+		desert_stone = "hades_core:stone_baked",
+		desert_sand = "hades_core:volcanic_sand",
+		chest = "hades_chests:chest";
+		steel_ingot = "hades_core:steel_ingot",
+		gold_ingot = "hades_core:gold_ingot",
+		mese = "hades_core:mese",
+		mese_crystal = "hades_core:mese_crystal",
+		mese_crystal_fragment = "hades_core:mese_crystal_fragment",
+		teleporter = "hades_materials:teleporter_device",
+		copper_ingot = "hades_core:copper_ingot",
+		tin_ingot = "hades_core:tin_ingot",
+		glass = "hades_core:glass",
+	}
+  if minetest.get_modpath("hades_default") then
+		materials.desert_sand = "hades_default:desert_sand"
+  end
+end
+
 -- Crafting recipes for pipes
 
 minetest.register_craft( {
-        output = "pipeworks:pipe_1_empty 12",
-        recipe = {
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-                { "", "", "" },
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-        },
-})
-
-minetest.register_craft( {
-        output = "pipeworks:straight_pipe_empty 3",
-        recipe = {
-                { "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty" },
-        },
-})
-
-minetest.register_craft( {
-        output = "pipeworks:spigot 3",
-        recipe = {
-                { "pipeworks:pipe_1_empty", "" },
-                { "", "pipeworks:pipe_1_empty" },
-        },
-})
-
-minetest.register_craft( {
-	output = "pipeworks:entry_panel_empty 2",
+	output = "pipeworks:pipe_1_empty 12",
 	recipe = {
-		{ "", "default:steel_ingot", "" },
-		{ "", "pipeworks:pipe_1_empty", "" },
-		{ "", "default:steel_ingot", "" },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+			{ "", "", "" },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot }
 	},
 })
 
+minetest.register_craft( {
+	output = "pipeworks:straight_pipe_empty 3",
+	recipe = {
+			{ "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty" },
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:spigot 3",
+	recipe = {
+			{ "pipeworks:pipe_1_empty", "" },
+			{ "", "pipeworks:pipe_1_empty" },
+	},
+})
+
+minetest.register_craft( {
+output = "pipeworks:entry_panel_empty 2",
+recipe = {
+	{ "", materials.steel_ingot, "" },
+	{ "", "pipeworks:pipe_1_empty", "" },
+	{ "", materials.steel_ingot, "" },
+},
+})
+
 -- Various ancillary pipe devices
 
 minetest.register_craft( {
-        output = "pipeworks:pump_off 2",
-        recipe = {
-                { "default:stone", "default:steel_ingot", "default:stone" },
-                { "default:copper_ingot", "default:mese_crystal_fragment", "default:copper_ingot" },
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-        },
+	output = "pipeworks:pump_off 2",
+	recipe = {
+			{ materials.stone, materials.steel_ingot, materials.stone },
+			{ materials.copper_ingot, materials.mese_crystal_fragment, materials.copper_ingot },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot }
+	},
 })
 
 minetest.register_craft( {
-        output = "pipeworks:valve_off_empty 2",
-        recipe = {
-                { "", "group:stick", "" },
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-                { "", "default:steel_ingot", "" }
-        },
+	output = "pipeworks:valve_off_empty 2",
+	recipe = {
+			{ "", "group:stick", "" },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+			{ "", materials.steel_ingot, "" }
+	},
 })
 
 minetest.register_craft( {
-        output = "pipeworks:storage_tank_0 2",
-        recipe = {
-                { "", "default:steel_ingot", "default:steel_ingot" },
-                { "default:steel_ingot", "default:glass", "default:steel_ingot" },
-                { "default:steel_ingot", "default:steel_ingot", "" }
-        },
+	output = "pipeworks:storage_tank_0 2",
+	recipe = {
+			{ "", materials.steel_ingot, materials.steel_ingot },
+			{ materials.steel_ingot, materials.glass, materials.steel_ingot },
+			{ materials.steel_ingot, materials.steel_ingot, "" }
+	},
 })
 
 minetest.register_craft( {
-        output = "pipeworks:grating 2",
-        recipe = {
-                { "default:steel_ingot", "", "default:steel_ingot" },
-                { "", "pipeworks:pipe_1_empty", "" },
-                { "default:steel_ingot", "", "default:steel_ingot" }
-        },
+	output = "pipeworks:grating 2",
+	recipe = {
+			{ materials.steel_ingot, "", materials.steel_ingot },
+			{ "", "pipeworks:pipe_1_empty", "" },
+			{ materials.steel_ingot, "", materials.steel_ingot }
+	},
 })
 
 minetest.register_craft( {
-        output = "pipeworks:flow_sensor_empty 2",
-        recipe = {
-                { "pipeworks:pipe_1_empty", "mesecons:mesecon", "pipeworks:pipe_1_empty" },
-        },
+	output = "pipeworks:flow_sensor_empty 2",
+	recipe = {
+			{ "pipeworks:pipe_1_empty", "mesecons:mesecon", "pipeworks:pipe_1_empty" },
+	},
 })
 
 minetest.register_craft( {
-        output = "pipeworks:fountainhead 2",
-        recipe = {
-                { "pipeworks:pipe_1_empty" },
-				{ "pipeworks:pipe_1_empty" }
-        },
+	output = "pipeworks:fountainhead 2",
+	recipe = {
+			{ "pipeworks:pipe_1_empty" },
+			{ "pipeworks:pipe_1_empty" }
+	},
 })
+
+-- injectors
+
+minetest.register_craft( {
+	output = "pipeworks:filter 2",
+	recipe = {
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ "group:stick", materials.mese_crystal, "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" }
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:mese_filter 2",
+	recipe = {
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ "group:stick", materials.mese, "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" }
+	},
+})
+
+if minetest.get_modpath("digilines") then
+	minetest.register_craft( {
+		output = "pipeworks:digiline_filter 2",
+		recipe = {
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ "group:stick", "digilines:wire_std_00000000", "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+-- other
+
+minetest.register_craft( {
+	output = "pipeworks:autocrafter 2",
+	recipe = {
+			{ materials.steel_ingot, materials.mese_crystal, materials.steel_ingot },
+			{ "basic_materials:plastic_sheet", materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.mese_crystal, materials.steel_ingot }
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:steel_block_embedded_tube 1",
+	recipe = {
+		{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+		{ materials.steel_ingot, "pipeworks:tube_1", materials.steel_ingot },
+		{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot }
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:steel_pane_embedded_tube 1",
+	recipe = {
+		{ "", materials.steel_ingot, "" },
+		{ "", "pipeworks:tube_1", "" },
+		{ "", materials.steel_ingot, "" }
+	},
+})
+
+minetest.register_craft({
+	output = "pipeworks:trashcan",
+	recipe = {
+		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+		{ materials.steel_ingot, "", materials.steel_ingot },
+		{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:teleport_tube_1 2",
+	recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.desert_stone, materials.teleporter, materials.desert_stone },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+	},
+})
+
+if pipeworks.enable_priority_tube then
+	minetest.register_craft( {
+		output = "pipeworks:priority_tube_1 6",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.gold_ingot, "", materials.gold_ingot },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+if pipeworks.enable_accelerator_tube then
+	minetest.register_craft( {
+		output = "pipeworks:accelerator_tube_1 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.mese_crystal_fragment, materials.steel_ingot, materials.mese_crystal_fragment },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+if pipeworks.enable_crossing_tube then
+	minetest.register_craft( {
+		output = "pipeworks:crossing_tube_1 5",
+		recipe = {
+			{ "", "pipeworks:tube_1", "" },
+			{ "pipeworks:tube_1", "pipeworks:tube_1", "pipeworks:tube_1" },
+			{ "", "pipeworks:tube_1", "" }
+		},
+	})
+end
+
+if pipeworks.enable_one_way_tube then
+	minetest.register_craft({
+		output = "pipeworks:one_way_tube 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ "group:stick", materials.mese_crystal, "basic_materials:plastic_sheet" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+if pipeworks.enable_mese_tube then
+	minetest.register_craft( {
+		output = "pipeworks:mese_tube_000000 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ "", materials.mese_crystal, "" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+
+	minetest.register_craft( {
+		type = "shapeless",
+		output = "pipeworks:mese_tube_000000",
+		recipe = {
+			"pipeworks:tube_1",
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+		},
+	})
+end
+
+if pipeworks.enable_sand_tube then
+	minetest.register_craft( {
+		output = "pipeworks:sand_tube_1 2",
+		recipe = {
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet"},
+			{"group:sand",                 "group:sand",                 "group:sand"},
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet"}
+		},
+	})
+
+	minetest.register_craft( {
+		output = "pipeworks:sand_tube_1",
+		recipe = {
+			{"group:sand", "pipeworks:tube_1", "group:sand"},
+		},
+	})
+end
+
+if pipeworks.enable_mese_sand_tube then
+	minetest.register_craft( {
+		output = "pipeworks:mese_sand_tube_1 2",
+		recipe = {
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{"group:sand",				 materials.mese_crystal,	   "group:sand" },
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+
+	minetest.register_craft( {
+		type = "shapeless",
+		output = "pipeworks:mese_sand_tube_1",
+		recipe = {
+			"pipeworks:sand_tube_1",
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+		},
+	})
+end
+
+if pipeworks.enable_deployer then
+	minetest.register_craft({
+		output = "pipeworks:deployer_off",
+		recipe = {
+			{ "group:wood",	materials.chest,	"group:wood"	},
+			{ materials.stone, "mesecons:piston",  materials.stone },
+			{ materials.stone, "mesecons:mesecon", materials.stone },
+		}
+	})
+end
+
+if pipeworks.enable_dispenser then
+	minetest.register_craft({
+		output = "pipeworks:dispenser_off",
+		recipe = {
+			{ materials.desert_sand, materials.chest,	materials.desert_sand },
+			{ materials.stone,	   "mesecons:piston",  materials.stone	   },
+			{ materials.stone,	   "mesecons:mesecon", materials.stone	  },
+		}
+	})
+end
+
+if pipeworks.enable_node_breaker then
+	minetest.register_craft({
+		output = "pipeworks:nodebreaker_off",
+		recipe = {
+			{ "basic_materials:gear_steel", "basic_materials:gear_steel",   "basic_materials:gear_steel"	},
+			{ materials.stone, "mesecons:piston",   materials.stone },
+			{ "group:wood",	"mesecons:mesecon",  "group:wood" },
+		}
+	})
+end
diff --git a/decorative_tubes.lua b/decorative_tubes.lua
index 308330b..37ecec2 100644
--- a/decorative_tubes.lua
+++ b/decorative_tubes.lua
@@ -1,20 +1,25 @@
 local S = minetest.get_translator("pipeworks")
 
 local straight = function(pos, node, velocity, stack) return {velocity} end
+local steel_tex = "[combine:16x16^[noalpha^[colorize:#D3D3D3"
+if minetest.get_modpath("default") then steel_tex = "default_steel_block.png" end
 
 minetest.register_node("pipeworks:steel_block_embedded_tube", {
 	description = S("Airtight steelblock embedded tube"),
 	tiles = {
-		"default_steel_block.png", "default_steel_block.png",
-		"default_steel_block.png", "default_steel_block.png",
-		"default_steel_block.png^pipeworks_tube_connection_metallic.png",
-		"default_steel_block.png^pipeworks_tube_connection_metallic.png",
+		steel_tex, steel_tex,
+		steel_tex, steel_tex,
+		steel_tex .. "^pipeworks_tube_connection_metallic.png",
+		steel_tex .. "^pipeworks_tube_connection_metallic.png",
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1},
+	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1, dig_glass = 2, pickaxey=5},
+	_mcl_hardness=1.6,
 	legacy_facedir_simple = true,
-	sounds = default.node_sound_stone_defaults(),
+	_sound_def = {
+        key = "node_sound_stone_defaults",
+    },
 	tube = {
 		connect_sides = {front = 1, back = 1,},
 		priority = 50,
@@ -30,15 +35,6 @@ minetest.register_node("pipeworks:steel_block_embedded_tube", {
 })
 pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:steel_block_embedded_tube"
 
-minetest.register_craft( {
-	output = "pipeworks:steel_block_embedded_tube 1",
-	recipe = {
-		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-		{ "default:steel_ingot", "pipeworks:tube_1", "default:steel_ingot" },
-		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-	},
-})
-
 local pane_box = {
 	type = "fixed",
 	fixed = {
@@ -54,21 +50,25 @@ minetest.register_node("pipeworks:steel_pane_embedded_tube", {
 	drawtype = "nodebox",
 	description = S("Airtight panel embedded tube"),
 	tiles = {
-		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
-		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
-		"pipeworks_pane_embedded_tube_sides.png",
-		"pipeworks_pane_embedded_tube_sides.png",
-		"pipeworks_pane_embedded_tube_ends.png", "pipeworks_pane_embedded_tube_ends.png",
-		},
+		pipeworks.make_tube_tile("pipeworks_pane_embedded_tube_sides.png^[transformR90"),
+		pipeworks.make_tube_tile("pipeworks_pane_embedded_tube_sides.png^[transformR90"),
+		pipeworks.make_tube_tile("pipeworks_pane_embedded_tube_sides.png"),
+		pipeworks.make_tube_tile("pipeworks_pane_embedded_tube_sides.png"),
+		pipeworks.make_tube_tile("pipeworks_pane_embedded_tube_ends.png"),
+		pipeworks.make_tube_tile("pipeworks_pane_embedded_tube_ends.png"),
+	},
 	use_texture_alpha = texture_alpha_mode,
 	node_box = pane_box,
 	selection_box = pane_box,
 	collision_box = pane_box,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1},
+	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1, dig_glass = 2, pickaxey=5},
+	_mcl_hardness=1.6,
 	legacy_facedir_simple = true,
-	sounds = default.node_sound_stone_defaults(),
+	_sound_def = {
+        key = "node_sound_stone_defaults",
+    },
 	tube = {
 		connect_sides = {front = 1, back = 1,},
 		priority = 50,
@@ -83,12 +83,3 @@ minetest.register_node("pipeworks:steel_pane_embedded_tube", {
 	on_rotate = pipeworks.on_rotate,
 })
 pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:steel_pane_embedded_tube"
-
-minetest.register_craft( {
-	output = "pipeworks:steel_pane_embedded_tube 1",
-	recipe = {
-		{ "", "default:steel_ingot", "" },
-		{ "", "pipeworks:tube_1", "" },
-		{ "", "default:steel_ingot", "" }
-	},
-})
diff --git a/default_settings.lua b/default_settings.lua
index 9f21778..6bf0a67 100644
--- a/default_settings.lua
+++ b/default_settings.lua
@@ -27,6 +27,8 @@ local settings = {
 	enable_cyclic_mode = true,
 	drop_on_routing_fail = false,
 	delete_item_on_clearobject = true,
+	use_real_entities = true,
+	entity_update_interval = 0,
 }
 
 pipeworks.toggles = {}
@@ -62,10 +64,9 @@ pipeworks.toggles.finite_water = nil
 for name, value in pairs(settings) do
 	local setting_type = type(value)
 	if setting_type == "boolean" then
-		pipeworks[name] = minetest.settings:get_bool(prefix..name)
-		if pipeworks[name] == nil then
-			pipeworks[name] = value
-		end
+		pipeworks[name] = minetest.settings:get_bool(prefix..name, value)
+	elseif setting_type == "number" then
+		pipeworks[name] = tonumber(minetest.settings:get(prefix..name) or value)
 	else
 		pipeworks[name] = value
 	end
diff --git a/devices.lua b/devices.lua
index 49875c8..c5c9bf1 100644
--- a/devices.lua
+++ b/devices.lua
@@ -1,6 +1,8 @@
 local S = minetest.get_translator("pipeworks")
 local new_flow_logic_register = pipeworks.flowables.register
 
+local texture_alpha_mode = minetest.features.use_texture_alpha_string_modes
+
 local polys = ""
 if pipeworks.enable_lowpoly then polys = "_lowpoly" end
 
@@ -28,10 +30,12 @@ function pipeworks.rotate_on_place(itemstack, placer, pointed_thing)
 		if (not placer:get_player_control().sneak)
 		  and minetest.registered_nodes[node.name]
 		  and minetest.registered_nodes[node.name].on_rightclick then
-			minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
+			minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under,
+				node, placer, itemstack, pointed_thing)
+
 		else
 
-			local pitch = placer:get_look_pitch()
+			local pitch = -placer:get_look_vertical()
 			local above = pointed_thing.above
 			local under = pointed_thing.under
 			local fdir = minetest.dir_to_facedir(placer:get_look_dir())
@@ -129,9 +133,9 @@ for s in ipairs(states) do
 
 	local dgroups
 	if states[s] == "off" then
-		dgroups = {snappy=3, pipe=1}
+		dgroups = {snappy=3, pipe=1, dig_generic = 4, axey=5}
 	else
-		dgroups = {snappy=3, pipe=1, not_in_creative_inventory=1}
+		dgroups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5}
 	end
 
 	local pumpname = "pipeworks:pump_"..states[s]
@@ -140,10 +144,14 @@ for s in ipairs(states) do
 		drawtype = "mesh",
 		mesh = "pipeworks_pump"..polys..".obj",
 		tiles = { "pipeworks_pump_"..states[s]..".png" },
+		use_texture_alpha = texture_alpha_mode and "clip" or true,
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = dgroups,
-		sounds = default.node_sound_metal_defaults(),
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		pipe_connections = { top = 1 },
 		after_place_node = function(pos)
@@ -165,7 +173,7 @@ for s in ipairs(states) do
 			local fdir = node.param2
 			minetest.swap_node(pos, { name = "pipeworks:pump_"..states[3-s], param2 = fdir })
 		end,
-		on_rotate = screwdriver.rotate_simple
+		on_rotate = screwdriver and screwdriver.rotate_simple or nil
 	})
 
 	-- FIXME: this currently assumes that pumps can only rotate around the fixed axis pointing Y+.
@@ -195,7 +203,10 @@ for s in ipairs(states) do
 			fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 		},
 		groups = dgroups,
-		sounds = default.node_sound_metal_defaults(),
+		_mcl_hardness = 1.6,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		on_place = pipeworks.rotate_on_place,
 		after_dig_node = function(pos)
@@ -242,8 +253,11 @@ minetest.register_node(nodename_valve_loaded, {
 		type = "fixed",
 		fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 	},
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
@@ -284,6 +298,7 @@ minetest.register_node("pipeworks:grating", {
 		"pipeworks_grating_sides.png",
 		"pipeworks_grating_sides.png"
 	},
+	use_texture_alpha = texture_alpha_mode and "clip" or true,
 	drawtype = "nodebox",
 	node_box = {
 		type = "fixed",
@@ -291,8 +306,11 @@ minetest.register_node("pipeworks:grating", {
 	},
 	sunlight_propagates = true,
 	paramtype = "light",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	pipe_connections = { top = 1 },
 	after_place_node = function(pos)
@@ -316,8 +334,11 @@ minetest.register_node(nodename_spigot_empty, {
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	pipe_connections = { left=1, right=1, front=1, back=1,
 						 left_param2 = 3, right_param2 = 1, front_param2 = 2, back_param2 = 0 },
@@ -344,22 +365,18 @@ minetest.register_node(nodename_spigot_loaded, {
 	drawtype = "mesh",
 	mesh = "pipeworks_spigot_pouring"..polys..".obj",
 	tiles = {
-		{
-			name = "default_water_flowing_animated.png",
-			animation = {
-				type = "vertical_frames",
-				aspect_w = 16,
-				aspect_h = 16,
-				length = 0.8,
-			},
-		},
+		minetest.registered_nodes[pipeworks.liquids.water.source].tiles[1],
 		{ name = "pipeworks_spigot.png" }
 	},
+	use_texture_alpha = texture_alpha_mode and "blend" or true,
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	pipe_connections = { left=1, right=1, front=1, back=1,
 						 left_param2 = 3, right_param2 = 1, front_param2 = 2, back_param2 = 0 },
@@ -414,8 +431,11 @@ minetest.register_node(nodename_panel_empty, {
 	tiles = { "pipeworks_entry_panel.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
@@ -434,8 +454,11 @@ minetest.register_node(nodename_panel_loaded, {
 	tiles = { "pipeworks_entry_panel.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
@@ -464,8 +487,11 @@ minetest.register_node(nodename_sensor_empty, {
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
@@ -503,8 +529,11 @@ minetest.register_node(nodename_sensor_loaded, {
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
@@ -548,12 +577,12 @@ new_flow_logic_register.transition_simple_set(sensor_pressure_set, { mesecons=pi
 -- TODO flow-logic-stub: these don't currently do anything under the new flow logic.
 for fill = 0, 10 do
 	local filldesc=S("empty")
-	local sgroups = {snappy=3, pipe=1, tankfill=fill+1}
+	local sgroups = {snappy=3, pipe=1, tankfill=fill+1, dig_generic = 4, axey=5}
 	local image = nil
 
 	if fill ~= 0 then
 		filldesc=S("@1% full", 10*fill)
-		sgroups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1}
+		sgroups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1, dig_generic = 4, axey=5}
 		image = "pipeworks_storage_tank_fittings.png"
 	end
 
@@ -570,8 +599,11 @@ for fill = 0, 10 do
 		inventory_image = image,
 		paramtype = "light",
 		paramtype2 = "facedir",
-		groups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1},
-		sounds = default.node_sound_metal_defaults(),
+		groups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:storage_tank_0",
 		pipe_connections = { top = 1, bottom = 1},
@@ -599,7 +631,10 @@ for fill = 0, 10 do
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = sgroups,
-		sounds = default.node_sound_metal_defaults(),
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:storage_tank_0",
 		pipe_connections = { top = 1, bottom = 1},
@@ -625,8 +660,11 @@ minetest.register_node(nodename_fountain_empty, {
 	tiles = { "pipeworks_fountainhead.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	pipe_connections = { bottom = 1 },
 	after_place_node = function(pos)
@@ -660,8 +698,11 @@ minetest.register_node(nodename_fountain_loaded, {
 	tiles = { "pipeworks_fountainhead.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	pipe_connections = { bottom = 1 },
 	after_place_node = function(pos)
@@ -710,8 +751,11 @@ minetest.register_node(nodename_sp_empty, {
 	tiles = { "pipeworks_straight_pipe_empty.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
@@ -732,8 +776,11 @@ minetest.register_node(nodename_sp_loaded, {
 	tiles = { "pipeworks_straight_pipe_loaded.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_metal_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
+	_sound_def = {
+        key = "node_sound_metal_defaults",
+    },
 	walkable = true,
 	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
diff --git a/filter-injector.lua b/filter-injector.lua
index 5ae3719..ac98a62 100644
--- a/filter-injector.lua
+++ b/filter-injector.lua
@@ -32,22 +32,35 @@ local function set_filter_formspec(data, meta)
 		local exmatch_button = ""
 		if data.stackwise then
 			exmatch_button =
-				fs_helpers.cycling_button(meta, "button[4,3.5;4,1", "exmatch_mode",
+				fs_helpers.cycling_button(meta, "button["..(10.2-(0.22)-4)..",4.5;4,1", "exmatch_mode",
 					{S("Exact match - off"),
 					 S("Exact match - on")})
 		end
-
-		formspec = "size[8,8.5]"..
-			"item_image[0,0;1,1;pipeworks:"..data.name.."]"..
-			"label[1,0;"..minetest.formspec_escape(itemname).."]"..
-			"label[0,1;"..S("Prefer item types:").."]"..
-			"list[context;main;0,1.5;8,2;]"..
-			fs_helpers.cycling_button(meta, "button[0,3.5;4,1", "slotseq_mode",
+		local size = "10.2,11"
+		local list_backgrounds = ""
+		if minetest.get_modpath("i3") then
+			list_backgrounds = "style_type[box;colors=#666]"
+			for i=0, 7 do
+				for j=0, 1 do
+					list_backgrounds = list_backgrounds .. "box[".. 0.22+(i*1.25) ..",".. 1.75+(j*1.25) ..";1,1;]"
+				end
+			end
+		end
+		formspec =
+			"formspec_version[2]"..
+			"size["..size.."]"..
+			pipeworks.fs_helpers.get_prepends(size)..
+			"item_image[0.22,0.22;1,1;pipeworks:"..data.name.."]"..
+			"label[1.22,0.72;"..minetest.formspec_escape(itemname).."]"..
+			"label[0.22,1.5;"..S("Prefer item types:").."]"..
+			list_backgrounds..
+			"list[context;main;0.22,1.75;8,2;]"..
+			fs_helpers.cycling_button(meta, "button[0.22,4.5;4,1", "slotseq_mode",
 				{S("Sequence slots by Priority"),
 				 S("Sequence slots Randomly"),
 				 S("Sequence slots by Rotation")})..
 			exmatch_button..
-			"list[current_player;main;0,4.5;8,4;]" ..
+			pipeworks.fs_helpers.get_inv(6)..
 			"listring[]"
 	end
 	meta:set_string("formspec", formspec)
@@ -65,8 +78,8 @@ local function punch_filter(data, filtpos, filtnode, msg)
 	local fromnode = minetest.get_node(frompos)
 	if not fromnode then return end
 	local fromdef = minetest.registered_nodes[fromnode.name]
-	if not fromdef then return end
-	local fromtube = fromdef.tube
+	if not fromdef or not fromdef.tube then return end
+	local fromtube = table.copy(fromdef.tube)
 	local input_special_cases = {
 		["technic:mv_electric_furnace"] = "dst",
 		["technic:mv_electric_furnace_active"] = "dst",
@@ -375,9 +388,12 @@ for _, data in ipairs({
 			"pipeworks_"..data.name.."_top.png",
 		},
 		paramtype2 = "facedir",
-		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, mesecon = 2},
+		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, mesecon = 2, axey=5},
+		_mcl_hardness=1.6,
 		legacy_facedir_simple = true,
-		sounds = default.node_sound_wood_defaults(),
+		_sound_def = {
+			key = "node_sound_wood_defaults",
+		},
 		on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
 			set_filter_formspec(data, meta)
@@ -482,35 +498,6 @@ for _, data in ipairs({
 	pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:"..data.name
 end
 
-minetest.register_craft( {
-	output = "pipeworks:filter 2",
-	recipe = {
-	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" },
-	        { "group:stick", "default:mese_crystal", "basic_materials:plastic_sheet" },
-	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" }
-	},
-})
-
-minetest.register_craft( {
-	output = "pipeworks:mese_filter 2",
-	recipe = {
-	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" },
-	        { "group:stick", "default:mese", "basic_materials:plastic_sheet" },
-	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" }
-	},
-})
-
-if minetest.get_modpath("digilines") then
-	minetest.register_craft( {
-		output = "pipeworks:digiline_filter 2",
-		recipe = {
-			{ "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" },
-			{ "group:stick", "digilines:wire_std_00000000", "basic_materials:plastic_sheet" },
-			{ "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" }
-		},
-	})
-end
-
 --[[
 In the past the filter-injectors had real items in their inventories. This code
 puts them to the input to the filter-injector if possible. Else the items are
diff --git a/flowing_logic.lua b/flowing_logic.lua
index 55c3ac7..b1c12aa 100644
--- a/flowing_logic.lua
+++ b/flowing_logic.lua
@@ -83,7 +83,7 @@ end
 
 pipeworks.spigot_check = function(pos, node)
 	local belowname = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z}).name
-	if belowname and (belowname == "air" or belowname == "default:water_flowing" or belowname == "default:water_source") then
+	if belowname and (belowname == "air" or belowname == pipeworks.liquids.water.flowing or belowname == pipeworks.liquids.water.source) then
 		local spigotname = minetest.get_node(pos).name
 		local fdir=node.param2 % 4
 		local check = {
@@ -96,14 +96,14 @@ pipeworks.spigot_check = function(pos, node)
 		if near_node and string.find(near_node.name, "_loaded") then
 			if spigotname and spigotname == "pipeworks:spigot" then
 				minetest.add_node(pos,{name = "pipeworks:spigot_pouring", param2 = fdir})
-				if finitewater or belowname ~= "default:water_source" then
-					minetest.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = "default:water_source"})
+				if finitewater or belowname ~= pipeworks.liquids.water.source then
+					minetest.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = pipeworks.liquids.water.source})
 				end
 			end
 		else
 			if spigotname == "pipeworks:spigot_pouring" then
 				minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:spigot", param2 = fdir})
-				if belowname == "default:water_source" and not finitewater then
+				if belowname == pipeworks.liquids.water.source and not finitewater then
 					minetest.remove_node({x=pos.x,y=pos.y-1,z=pos.z})
 				end
 			end
@@ -113,20 +113,20 @@ end
 
 pipeworks.fountainhead_check = function(pos, node)
 	local abovename = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name
-	if abovename and (abovename == "air" or abovename == "default:water_flowing" or abovename == "default:water_source") then
+	if abovename and (abovename == "air" or abovename == pipeworks.liquids.water.flowing or abovename == pipeworks.liquids.water.source) then
 		local fountainhead_name = minetest.get_node(pos).name
 		local near_node = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z})
 		if near_node and string.find(near_node.name, "_loaded") then
 			if fountainhead_name and fountainhead_name == "pipeworks:fountainhead" then
 				minetest.add_node(pos,{name = "pipeworks:fountainhead_pouring"})
-				if finitewater or abovename ~= "default:water_source" then
-					minetest.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = "default:water_source"})
+				if finitewater or abovename ~= pipeworks.liquids.water.source then
+					minetest.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = pipeworks.liquids.water.source})
 				end
 			end
 		else
 			if fountainhead_name == "pipeworks:fountainhead_pouring" then
 				minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:fountainhead"})
-				if abovename == "default:water_source" and not finitewater then
+				if abovename == pipeworks.liquids.water.source and not finitewater then
 					minetest.remove_node({x=pos.x,y=pos.y+1,z=pos.z})
 				end
 			end
diff --git a/init.lua b/init.lua
index beeefb7..8622c6f 100644
--- a/init.lua
+++ b/init.lua
@@ -11,6 +11,16 @@ pipeworks.worldpath = minetest.get_worldpath()
 pipeworks.modpath = minetest.get_modpath("pipeworks")
 local S = minetest.get_translator("pipeworks")
 
+pipeworks.liquids = {}
+pipeworks.liquids.water = {
+	source = minetest.registered_nodes["mapgen_water_source"].name,
+	flowing = minetest.registered_nodes["mapgen_water_source"].liquid_alternative_flowing
+}
+pipeworks.liquids.river_water = {
+	source = minetest.registered_nodes["mapgen_river_water_source"].name,
+	flowing = minetest.registered_nodes["mapgen_river_water_source"].liquid_alternative_flowing
+}
+
 dofile(pipeworks.modpath.."/default_settings.lua")
 -- Read the external config file if it exists.
 local worldsettingspath = pipeworks.worldpath.."/pipeworks_settings.txt"
@@ -22,6 +32,9 @@ end
 if pipeworks.toggles.pipe_mode == "pressure" then
 	minetest.log("warning", "pipeworks pressure logic mode comes with caveats and differences in behaviour, you have been warned!")
 end
+if pipeworks.entity_update_interval >= 0.2 and pipeworks.enable_accelerator_tube then
+	minetest.log("warning", "pipeworks accelerator tubes will not entirely work with an entity update interval 0.2 or above.")
+end
 
 -- Random variables
 
@@ -40,7 +53,8 @@ pipeworks.rules_all = {{x=0, y=0, z=1},{x=0, y=0, z=-1},{x=1, y=0, z=0},{x=-1, y
 pipeworks.mesecons_rules={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0}}
 pipeworks.digilines_rules={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0}}
 
-pipeworks.liquid_texture = "default_water.png"
+pipeworks.liquid_texture = minetest.registered_nodes[pipeworks.liquids.water.flowing].tiles[1]
+if type(pipeworks.liquid_texture) == "table" then pipeworks.liquid_texture = pipeworks.liquid_texture.name end
 
 pipeworks.button_off   = {text="", texture="pipeworks_button_off.png", addopts="false;false;pipeworks_button_interm.png"}
 pipeworks.button_on    = {text="", texture="pipeworks_button_on.png",  addopts="false;false;pipeworks_button_interm.png"}
@@ -58,6 +72,29 @@ function pipeworks.fix_image_names(table, replacement)
 	return outtable
 end
 
+local function overlay_tube_texture(texture)
+	-- The texture appears the first time to be colorized as the opaque background.
+	return ("(%s)^[noalpha^[colorize:#dadada^(%s)"):format(texture, texture)
+end
+
+function pipeworks.make_tube_tile(tile)
+	if pipeworks.use_real_entities then
+		return tile
+	elseif type(tile) == "string" then
+		return overlay_tube_texture(tile)
+	else
+		tile = table.copy(tile)
+		if tile.color then
+			-- Won't work 100% of the time, but good enough.
+			tile.name = tile.name .. "^[multiply:" .. minetest.colorspec_to_colorstring(tile.color)
+			tile.color = nil
+		end
+		tile.name = overlay_tube_texture(tile.name)
+		tile.backface_culling = nil -- The texture is opaque
+		return tile
+	end
+end
+
 function pipeworks.add_node_box(t, b)
 	if not t or not b then return end
 	for i in ipairs(b)
@@ -91,7 +128,7 @@ function pipeworks.replace_name(tbl,tr,name)
 end
 
 pipeworks.logger = function(msg)
-	print("[pipeworks] "..msg)
+	minetest.log("action", "[pipeworks] "..msg)
 end
 
 -------------------------------------------
@@ -113,11 +150,9 @@ dofile(pipeworks.modpath.."/autoplace_tubes.lua")
 dofile(pipeworks.modpath.."/luaentity.lua")
 dofile(pipeworks.modpath.."/item_transport.lua")
 dofile(pipeworks.modpath.."/flowing_logic.lua")
-dofile(pipeworks.modpath.."/crafts.lua")
 dofile(pipeworks.modpath.."/tube_registration.lua")
 dofile(pipeworks.modpath.."/routing_tubes.lua")
 dofile(pipeworks.modpath.."/sorting_tubes.lua")
-dofile(pipeworks.modpath.."/vacuum_tubes.lua")
 dofile(pipeworks.modpath.."/signal_tubes.lua")
 dofile(pipeworks.modpath.."/decorative_tubes.lua")
 dofile(pipeworks.modpath.."/filter-injector.lua")
@@ -134,18 +169,30 @@ dofile(pipeworks.modpath..logicdir.."abms.lua")
 dofile(pipeworks.modpath..logicdir.."abm_register.lua")
 dofile(pipeworks.modpath..logicdir.."flowable_node_registry_install.lua")
 
-if pipeworks.enable_pipes then dofile(pipeworks.modpath.."/pipes.lua") end
-if pipeworks.enable_teleport_tube then dofile(pipeworks.modpath.."/teleport_tube.lua") end
-if pipeworks.enable_pipe_devices then dofile(pipeworks.modpath.."/devices.lua") end
-if pipeworks.enable_redefines then
+if pipeworks.enable_pipes then
+	dofile(pipeworks.modpath.."/pipes.lua")
+end
+if pipeworks.enable_teleport_tube then
+	dofile(pipeworks.modpath.."/teleport_tube.lua")
+end
+if pipeworks.enable_pipe_devices then
+	dofile(pipeworks.modpath.."/devices.lua")
+end
+if pipeworks.enable_redefines and (minetest.get_modpath("default") or minetest.get_modpath("hades_core")) then
 	dofile(pipeworks.modpath.."/compat-chests.lua")
 	dofile(pipeworks.modpath.."/compat-furnaces.lua")
 end
-if pipeworks.enable_autocrafter then dofile(pipeworks.modpath.."/autocrafter.lua") end
-if pipeworks.enable_lua_tube and
-		(minetest.get_modpath("mesecons") or minetest.get_modpath("digilines")) then
+if pipeworks.enable_autocrafter then
+	dofile(pipeworks.modpath.."/autocrafter.lua")
+end
+if pipeworks.enable_lua_tube and minetest.get_modpath("mesecons") then
 	dofile(pipeworks.modpath.."/lua_tube.lua")
 end
+if pipeworks.enable_sand_tube or pipeworks.enable_mese_sand_tube then
+	dofile(pipeworks.modpath.."/vacuum_tubes.lua")
+end
+
+dofile(pipeworks.modpath.."/crafts.lua")
 
 minetest.register_alias("pipeworks:pipe", "pipeworks:pipe_110000_empty")
 
diff --git a/item_transport.lua b/item_transport.lua
index e1ee192..7e83d95 100644
--- a/item_transport.lua
+++ b/item_transport.lua
@@ -1,5 +1,5 @@
 local luaentity = pipeworks.luaentity
-local enable_max_limit = minetest.settings:get("pipeworks_enable_items_per_tube_limit")
+local enable_max_limit = minetest.settings:get_bool("pipeworks_enable_items_per_tube_limit")
 local max_tube_limit = tonumber(minetest.settings:get("pipeworks_max_items_per_tube")) or 30
 if enable_max_limit == nil then enable_max_limit = true end
 
@@ -311,8 +311,6 @@ luaentity.register_entity("pipeworks:tubed_item", {
 			self:set_pos(pos)
 		end
 
-		local stack = ItemStack(self.itemstring)
-
 		local velocity = self:get_velocity()
 
 		local moved = false
@@ -329,9 +327,15 @@ luaentity.register_entity("pipeworks:tubed_item", {
 			moved = true
 		end
 
+		if not moved then
+			return
+		end
+
+		local stack = ItemStack(self.itemstring)
+
 		pipeworks.load_position(self.start_pos)
 		local node = minetest.get_node(self.start_pos)
-		if moved and minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then
+		if minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then
 			local leftover
 			if minetest.registered_nodes[node.name].tube and minetest.registered_nodes[node.name].tube.insert_object then
 				leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel, self.owner)
@@ -349,45 +353,43 @@ luaentity.register_entity("pipeworks:tubed_item", {
 			return
 		end
 
-		if moved then
-			local found_next, new_velocity, multimode = go_next(self.start_pos, velocity, stack, self.owner) -- todo: color
-			local rev_vel = vector.multiply(velocity, -1)
-			local rev_dir = vector.direction(self.start_pos,vector.add(self.start_pos,rev_vel))
-			local rev_node = minetest.get_node(vector.round(vector.add(self.start_pos,rev_dir)))
-			local tube_present = minetest.get_item_group(rev_node.name,"tubedevice") == 1
-			if not found_next then
-				if pipeworks.drop_on_routing_fail or not tube_present or
-						minetest.get_item_group(rev_node.name,"tube") ~= 1 then
-					-- Using add_item instead of item_drop since this makes pipeworks backward
-					-- compatible with Minetest 0.4.13.
-					-- Using item_drop here makes Minetest 0.4.13 crash.
-					local dropped_item = minetest.add_item(self.start_pos, stack)
-					if dropped_item then
-						dropped_item:set_velocity(vector.multiply(velocity, 5))
-						self:remove()
-					end
-					return
-				else
-					velocity = vector.multiply(velocity, -1)
-					self:set_pos(vector.subtract(self.start_pos, vector.multiply(vel, moved_by - 1)))
-					self:set_velocity(velocity)
+		local found_next, new_velocity, multimode = go_next(self.start_pos, velocity, stack, self.owner) -- todo: color
+		local rev_vel = vector.multiply(velocity, -1)
+		local rev_dir = vector.direction(self.start_pos,vector.add(self.start_pos,rev_vel))
+		local rev_node = minetest.get_node(vector.round(vector.add(self.start_pos,rev_dir)))
+		local tube_present = minetest.get_item_group(rev_node.name,"tubedevice") == 1
+		if not found_next then
+			if pipeworks.drop_on_routing_fail or not tube_present or
+					minetest.get_item_group(rev_node.name,"tube") ~= 1 then
+				-- Using add_item instead of item_drop since this makes pipeworks backward
+				-- compatible with Minetest 0.4.13.
+				-- Using item_drop here makes Minetest 0.4.13 crash.
+				local dropped_item = minetest.add_item(self.start_pos, stack)
+				if dropped_item then
+					dropped_item:set_velocity(vector.multiply(velocity, 5))
+					self:remove()
 				end
-			elseif is_multimode(multimode) then
-				-- create new stacks according to returned data.
-				local s = self.start_pos
-				for _, split in ipairs(multimode) do
-					pipeworks.tube_inject_item(s, s, split.velocity, split.itemstack, self.owner)
-				end
-				-- remove ourself now the splits are sent
-				self:remove()
 				return
+			else
+				velocity = vector.multiply(velocity, -1)
+				self:set_pos(vector.subtract(self.start_pos, vector.multiply(vel, moved_by - 1)))
+				self:set_velocity(velocity)
 			end
+		elseif is_multimode(multimode) then
+			-- create new stacks according to returned data.
+			local s = self.start_pos
+			for _, split in ipairs(multimode) do
+				pipeworks.tube_inject_item(s, s, split.velocity, split.itemstack, self.owner)
+			end
+			-- remove ourself now the splits are sent
+			self:remove()
+			return
+		end
 
-			if new_velocity and not vector.equals(velocity, new_velocity) then
-				local nvelr = math.abs(new_velocity.x + new_velocity.y + new_velocity.z)
-				self:set_pos(vector.add(self.start_pos, vector.multiply(new_velocity, (moved_by - 1) / nvelr)))
-				self:set_velocity(new_velocity)
-			end
+		if new_velocity and not vector.equals(velocity, new_velocity) then
+			local nvelr = math.abs(new_velocity.x + new_velocity.y + new_velocity.z)
+			self:set_pos(vector.add(self.start_pos, vector.multiply(new_velocity, (moved_by - 1) / nvelr)))
+			self:set_velocity(new_velocity)
 		end
 	end
 })
diff --git a/legacy.lua b/legacy.lua
index 72f8cb4..f45c375 100644
--- a/legacy.lua
+++ b/legacy.lua
@@ -26,8 +26,11 @@ if not minetest.get_modpath("auto_tree_tap") and
 			"pipeworks_nodebreaker_back.png","pipeworks_nodebreaker_front_off.png"},
 		is_ground_content = true,
 		paramtype2 = "facedir",
-		groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2, mesecon = 2,tubedevice=1, not_in_creative_inventory=1 },
-		sounds = default.node_sound_stone_defaults(),
+		groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2, mesecon = 2,tubedevice=1, not_in_creative_inventory=1, axey=5},
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_stone_defaults",
+		},
 		tube = {connect_sides={back=1}},
 		on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
diff --git a/lua_tube.lua b/lua_tube.lua
index c5fd24c..cae1bf3 100644
--- a/lua_tube.lua
+++ b/lua_tube.lua
@@ -865,7 +865,7 @@ for white  = 0, 1 do
 	tiles[3] = tiles[3]..tiles_on_off.R270:format(white == 1 and "on" or "off");
 	tiles[4] = tiles[4]..tiles_on_off.R_90:format(white == 1 and "on" or "off");
 
-	local groups = {snappy = 3, tube = 1, tubedevice = 1, overheat = 1}
+	local groups = {snappy = 3, tube = 1, tubedevice = 1, overheat = 1, dig_generic = 4, axey=5}
 	if red + blue + yellow + green + black + white ~= 0 then
 		groups.not_in_creative_inventory = 1
 	end
@@ -912,13 +912,16 @@ for white  = 0, 1 do
 		paramtype = "light",
 		is_ground_content = false,
 		groups = groups,
+		_mcl_hardness=1.6,
 		drop = BASENAME.."000000",
 		sunlight_propagates = true,
 		selection_box = selection_box,
 		node_box = node_box,
 		on_construct = reset_meta,
 		on_receive_fields = on_receive_fields,
-		sounds = default.node_sound_wood_defaults(),
+		_sound_def = {
+			key = "node_sound_wood_defaults",
+		},
 		mesecons = mesecons,
 		digiline = digiline,
 		-- Virtual portstates are the ports that
@@ -1021,14 +1024,17 @@ minetest.register_node(BASENAME .. "_burnt", {
 	is_burnt = true,
 	paramtype = "light",
 	is_ground_content = false,
-	groups = {snappy = 3, tube = 1, tubedevice = 1, not_in_creative_inventory=1},
+	groups = {snappy = 3, tube = 1, tubedevice = 1, not_in_creative_inventory=1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
 	drop = BASENAME.."000000",
 	sunlight_propagates = true,
 	selection_box = selection_box,
 	node_box = node_box,
 	on_construct = reset_meta,
 	on_receive_fields = on_receive_fields,
-	sounds = default.node_sound_wood_defaults(),
+	_sound_def = {
+        key = "node_sound_wood_defaults",
+    },
 	virtual_portstates = {red = false, blue = false, yellow = false,
 		green = false, black = false, white = false},
 	mesecons = {
diff --git a/luaentity.lua b/luaentity.lua
index 83fb4d9..9baea55 100644
--- a/luaentity.lua
+++ b/luaentity.lua
@@ -73,31 +73,43 @@ local function get_blockpos(pos)
 	        z = math.floor(pos.z / 16)}
 end
 
-local active_blocks = {} -- These only contain active blocks near players (i.e., not forceloaded ones)
+local move_entities_globalstep_part1
+local is_active
 
-local move_entities_globalstep_part1 = function(dtime)
-	local active_block_range = tonumber(minetest.settings:get("active_block_range")) or 2
-	local new_active_blocks = {}
-	for _, player in ipairs(minetest.get_connected_players()) do
-		local blockpos = get_blockpos(player:get_pos())
-		local minp = vector.subtract(blockpos, active_block_range)
-		local maxp = vector.add(blockpos, active_block_range)
+if pipeworks.use_real_entities then
+	local active_blocks = {} -- These only contain active blocks near players (i.e., not forceloaded ones)
 
-		for x = minp.x, maxp.x do
-		for y = minp.y, maxp.y do
-		for z = minp.z, maxp.z do
-			local pos = {x = x, y = y, z = z}
-			new_active_blocks[minetest.hash_node_position(pos)] = pos
-		end
-		end
+	move_entities_globalstep_part1 = function(dtime)
+		local active_block_range = tonumber(minetest.settings:get("active_block_range")) or 2
+		local new_active_blocks = {}
+		for _, player in ipairs(minetest.get_connected_players()) do
+			local blockpos = get_blockpos(player:get_pos())
+			local minp = vector.subtract(blockpos, active_block_range)
+			local maxp = vector.add(blockpos, active_block_range)
+
+			for x = minp.x, maxp.x do
+			for y = minp.y, maxp.y do
+			for z = minp.z, maxp.z do
+				local pos = {x = x, y = y, z = z}
+				new_active_blocks[minetest.hash_node_position(pos)] = pos
+			end
+			end
+			end
 		end
+		active_blocks = new_active_blocks
+		-- todo: callbacks on block load/unload
 	end
-	active_blocks = new_active_blocks
-	-- todo: callbacks on block load/unload
-end
 
-local function is_active(pos)
-	return active_blocks[minetest.hash_node_position(get_blockpos(pos))] ~= nil
+	is_active = function(pos)
+		return active_blocks[minetest.hash_node_position(get_blockpos(pos))] ~= nil
+	end
+else
+	move_entities_globalstep_part1 = function()
+	end
+
+	is_active = function()
+		return false
+	end
 end
 
 local entitydef_default = {
@@ -370,13 +382,36 @@ local move_entities_globalstep_part2 = function(dtime)
 	end
 end
 
-local handle_active_blocks_timer = 0.1
+-- dtime after which there is an update (or skip).
+local dtime_threshold = pipeworks.entity_update_interval
+-- Accumulated dtime since last update (or skip).
+local dtime_accum = 0
+-- Delayed dtime accumulated due to skipped updates.
+local dtime_delayed = 0
+local skip_update = false
 
 minetest.register_globalstep(function(dtime)
-	handle_active_blocks_timer = handle_active_blocks_timer + dtime
-	if dtime < 0.2 or handle_active_blocks_timer >= (dtime * 3) then
-		handle_active_blocks_timer = 0.1
-		move_entities_globalstep_part1(dtime)
-		move_entities_globalstep_part2(dtime)
+	if dtime >= 0.2 and dtime_delayed < 1 then
+		-- Reduce activity when the server is lagging.
+		skip_update = true
 	end
+
+	dtime_accum = dtime_accum + dtime
+	if dtime_accum < dtime_threshold then
+		return
+	end
+
+	if skip_update then
+		dtime_delayed = dtime_delayed + dtime_accum
+		skip_update = false
+	else
+		move_entities_globalstep_part1(dtime_accum + dtime_delayed)
+		move_entities_globalstep_part2(dtime_accum + dtime_delayed)
+		dtime_delayed = 0
+	end
+
+	-- Tune the threshold so that the average interval is pipeworks.entity_update_interval.
+	dtime_threshold = math.max(dtime_threshold + (pipeworks.entity_update_interval - dtime_accum) / 10, 0)
+
+	dtime_accum = 0
 end)
diff --git a/mod.conf b/mod.conf
index 17fd51c..51e0f95 100644
--- a/mod.conf
+++ b/mod.conf
@@ -1,5 +1,5 @@
 name = pipeworks
 description = This mod uses mesh nodes and nodeboxes to supply a complete set of 3D pipes and tubes, along with devices that work with them.
-depends = default, basic_materials, screwdriver
-optional_depends = mesecons, mesecons_mvps, digilines, signs_lib, unified_inventory
-min_minetest_version = 5.2.0
+depends = basic_materials
+optional_depends = mesecons, mesecons_mvps, digilines, signs_lib, unified_inventory, default, screwdriver, fl_mapgen, sound_api, i3, hades_core, hades_furnaces, hades_chests, mcl_mapgen_core
+min_minetest_version = 5.4.0
diff --git a/pipes.lua b/pipes.lua
index befbbb9..1e78417 100644
--- a/pipes.lua
+++ b/pipes.lua
@@ -37,11 +37,11 @@ for index, connects in ipairs(cconnects) do
 	end
 	--]]
 
-	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1}
+	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey=5}
 	local pipedesc = S("Pipe Segment").." "..dump(connects)
 
 	if #connects == 0 then
-		pgroups = {snappy = 3, tube = 1}
+		pgroups = {snappy = 3, tube = 1, dig_generic = 4, axey=5}
 		pipedesc = S("Pipe Segment")
 	end
 
@@ -76,7 +76,10 @@ for index, connects in ipairs(cconnects) do
 			fixed = outsel
 		},
 		groups = pgroups,
-		sounds = default.node_sound_metal_defaults(),
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
@@ -91,7 +94,7 @@ for index, connects in ipairs(cconnects) do
 		pipenumber = index
 	})
 
-	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1}
+	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey=5}
 
 	minetest.register_node("pipeworks:pipe_"..index.."_loaded", {
 		description = pipedesc,
@@ -110,7 +113,10 @@ for index, connects in ipairs(cconnects) do
 			fixed = outsel
 		},
 		groups = pgroups,
-		sounds = default.node_sound_metal_defaults(),
+		_mcl_hardness = 1.6,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
diff --git a/pressure_logic/abms.lua b/pressure_logic/abms.lua
index 50951b0..2675b7c 100644
--- a/pressure_logic/abms.lua
+++ b/pressure_logic/abms.lua
@@ -42,7 +42,7 @@ local check_for_liquids_v2 = function(pos, limit)
 	for _, tpos in ipairs(coords) do
 		if total >= limit then break end
 		local name = minetest.get_node(tpos).name
-		if name == "default:water_source" then
+		if name == pipeworks.liquids.water.source then
 			minetest.remove_node(tpos)
 			total = total + 1
 		end
@@ -247,9 +247,9 @@ flowlogic.helpers.make_neighbour_output_fixed = function(neighbours)
 			-- in non-finite mode, pressure has to be sustained to keep the sources there.
 			-- so in non-finite mode, placing water is dependent on the target node;
 			-- draining pressure is not.
-			local canplace = (name == "air") or (name == "default:water_flowing")
+			local canplace = (name == "air") or (name == pipeworks.liquids.water.flowing)
 			if canplace then
-				minetest.swap_node(npos, {name="default:water_source"})
+				minetest.swap_node(npos, {name=pipeworks.liquids.water.source})
 			end
 			if (not finitemode) or canplace then
 				taken = taken + 1
@@ -268,7 +268,7 @@ flowlogic.helpers.make_neighbour_cleanup_fixed = function(neighbours)
 		for _, offset in pairs(neighbours) do
 			local npos = vector.add(pos, offset)
 			local name = minetest.get_node(npos).name
-			if (name == "default:water_source") then
+			if (name == pipeworks.liquids.water.source) then
 				--pipeworks.logger("neighbour_cleanup_fixed removing "..formatvec(npos))
 				minetest.remove_node(npos)
 			end
diff --git a/routing_tubes.lua b/routing_tubes.lua
index e7bc596..4ea5c28 100644
--- a/routing_tubes.lua
+++ b/routing_tubes.lua
@@ -64,28 +64,39 @@ pipeworks.register_tube("pipeworks:broken_tube", {
 			local itemstack = puncher:get_wielded_item()
 			local wieldname = itemstack:get_name()
 			local playername = puncher:get_player_name()
-			local log_msg = playername.." struck a broken tube at "..minetest.pos_to_string(pos).."\n"
+			local log_msg = playername.." struck a broken tube at "..minetest.pos_to_string(pos).."\n            "
 			local meta = minetest.get_meta(pos)
 			local was_node = minetest.deserialize(meta:get_string("the_tube_was"))
 			if not was_node then
-				pipeworks.logger(log_msg.."            but it can't be repaired.")
+				pipeworks.logger(log_msg.."but it can't be repaired.")
 				return
 			end
 			if not pipeworks.check_and_wear_hammer(puncher) then
 				if wieldname == "" then
-					pipeworks.logger(log_msg.."            by hand. It's not very effective.")
+					pipeworks.logger(log_msg.."by hand. It's not very effective.")
 					if minetest.settings:get_bool("enable_damage") then
 						minetest.chat_send_player(playername,S("Broken tubes may be a bit sharp. Perhaps try with a hammer?"))
 						puncher:set_hp(puncher:get_hp()-1)
 					end
 				else
-					pipeworks.logger(log_msg.."            with "..wieldname.." but that tool is too weak.")
+					pipeworks.logger(log_msg.."with "..wieldname.." but that tool is too weak.")
 				end
 				return
 			end
-			pipeworks.logger(log_msg.."            with "..wieldname.." to repair it.")
-			minetest.swap_node(pos, { name = was_node.name, param2 = was_node.param2 })
-			pipeworks.scan_for_tube_objects(pos)
+			log_msg = log_msg.."with "..wieldname.." to repair it"
+			local nodedef = minetest.registered_nodes[was_node.name]
+			if nodedef then
+				pipeworks.logger(log_msg..".")
+				if nodedef.tube and nodedef.tube.on_repair then
+					nodedef.tube.on_repair(pos, was_node)
+				else
+					minetest.swap_node(pos, { name = was_node.name, param2 = was_node.param2 })
+					pipeworks.scan_for_tube_objects(pos)
+				end
+			else
+				pipeworks.logger(log_msg.." but original node "..was_node.name.." is not registered anymore.")
+				minetest.chat_send_player(playername, S("This tube cannot be repaired."))
+			end
 		end
 	}
 })
@@ -106,14 +117,6 @@ if pipeworks.enable_priority_tube then
 				tube = { priority = 150 } -- higher than tubedevices (100)
 			},
 	})
-	minetest.register_craft( {
-		output = "pipeworks:priority_tube_1 6",
-		recipe = {
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-			{ "default:gold_ingot", "", "default:gold_ingot" },
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
-		},
-	})
 end
 
 if pipeworks.enable_accelerator_tube then
@@ -131,14 +134,6 @@ if pipeworks.enable_accelerator_tube then
 					end}
 			},
 	})
-	minetest.register_craft( {
-		output = "pipeworks:accelerator_tube_1 2",
-		recipe = {
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-			{ "default:mese_crystal_fragment", "default:steel_ingot", "default:mese_crystal_fragment" },
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
-		},
-	})
 end
 
 if pipeworks.enable_crossing_tube then
@@ -153,28 +148,31 @@ if pipeworks.enable_crossing_tube then
 				tube = {can_go = function(pos, node, velocity, stack) return {velocity} end }
 			},
 	})
-	minetest.register_craft( {
-		output = "pipeworks:crossing_tube_1 5",
-		recipe = {
-			{ "", "pipeworks:tube_1", "" },
-			{ "pipeworks:tube_1", "pipeworks:tube_1", "pipeworks:tube_1" },
-			{ "", "pipeworks:tube_1", "" }
-		},
-	})
 end
 
+local texture_alpha_mode = minetest.features.use_texture_alpha_string_modes
+	and "clip" or true
+
 if pipeworks.enable_one_way_tube then
+	local tiles = {"pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_output.png",
+		"pipeworks_one_way_tube_input.png", "pipeworks_one_way_tube_side.png", "pipeworks_one_way_tube_top.png"}
+	for i, tile in ipairs(tiles) do
+		tiles[i] = pipeworks.make_tube_tile(tile)
+	end
 	minetest.register_node("pipeworks:one_way_tube", {
 		description = S("One way tube"),
-		tiles = {"pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_output.png",
-			"pipeworks_one_way_tube_input.png", "pipeworks_one_way_tube_side.png", "pipeworks_one_way_tube_top.png"},
+		tiles = tiles,
+		use_texture_alpha = texture_alpha_mode,
 		paramtype2 = "facedir",
 		drawtype = "nodebox",
 		paramtype = "light",
 		node_box = {type = "fixed",
 			fixed = {{-1/2, -9/64, -9/64, 1/2, 9/64, 9/64}}},
-		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1},
-		sounds = default.node_sound_wood_defaults(),
+		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1, axey=5},
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_wood_defaults",
+		},
 		tube = {
 			connect_sides = {left = 1, right = 1},
 			can_go = function(pos, node, velocity, stack)
@@ -193,12 +191,4 @@ if pipeworks.enable_one_way_tube then
 		check_for_horiz_pole = pipeworks.check_for_horiz_tube
 	})
 	pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:one_way_tube"
-	minetest.register_craft({
-		output = "pipeworks:one_way_tube 2",
-		recipe = {
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-			{ "group:stick", "default:mese_crystal", "basic_materials:plastic_sheet" },
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
-		},
-	})
 end
diff --git a/settingtypes.txt b/settingtypes.txt
index cd6efbc..6d8e3ad 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -75,3 +75,15 @@ pipeworks_drop_on_routing_fail (Drop On Routing Fail) bool false
 
 #Delete item on clearobject.
 pipeworks_delete_item_on_clearobject (Delete Item On Clearobject) bool true
+
+#Use real visible entities in tubes within active areas.
+#When disabled, tubes are made opaque.
+pipeworks_use_real_entities (Use Real Entities) bool true
+
+#Target interval between tube entity steps.
+#A high value may cause issues with tube entity visuals.
+#A value 0.2 or above may cause issues with accelerator tubes.
+pipeworks_entity_update_interval (Entity Update Interval) float 0 0 0.8
+
+# if set to true, items passing through teleport tubes will log log where they came from and where they went.
+pipeworks_log_teleport_tubes (Log Teleport Tubes) bool false
diff --git a/signal_tubes.lua b/signal_tubes.lua
index cabf488..3a47e8c 100644
--- a/signal_tubes.lua
+++ b/signal_tubes.lua
@@ -11,8 +11,8 @@ local function after_break(pos)
 	end
 end
 
-if pipeworks.enable_detector_tube then
-	local detector_tube_step = 5 * tonumber(minetest.settings:get("dedicated_server_step"))
+if minetest.get_modpath("mesecons") and pipeworks.enable_detector_tube then
+	local detector_tube_step = 5 * (tonumber(minetest.settings:get("dedicated_server_step")) or 0.09)
 	pipeworks.register_tube("pipeworks:detector_tube_on", {
 			description = S("Detecting Pneumatic Tube Segment on"),
 			inventory_image = "pipeworks_detector_tube_inv.png",
@@ -137,7 +137,7 @@ if digiline_enabled and pipeworks.enable_digiline_detector_tube then
 	})
 end
 
-if pipeworks.enable_conductor_tube then
+if minetest.get_modpath("mesecons") and pipeworks.enable_conductor_tube then
 	pipeworks.register_tube("pipeworks:conductor_tube_off", {
 			description = S("Conducting Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_conductor_tube_inv.png",
diff --git a/sorting_tubes.lua b/sorting_tubes.lua
index 10a81a6..d35308f 100644
--- a/sorting_tubes.lua
+++ b/sorting_tubes.lua
@@ -16,29 +16,43 @@ if pipeworks.enable_mese_tube then
 		local buttons_formspec = ""
 		for i = 0, 5 do
 			buttons_formspec = buttons_formspec .. fs_helpers.cycling_button(meta,
-				"image_button[7,"..(i+0.2)..";1,0.6", "l"..(i+1).."s",
+				"image_button[9,"..(i+(i*0.25)+0.5)..";1,0.6", "l"..(i+1).."s",
 				{
 					pipeworks.button_off,
 					pipeworks.button_on
 				}
 			)
 		end
+		local list_backgrounds = ""
+		if minetest.get_modpath("i3") then
+			list_backgrounds = "style_type[box;colors=#666]"
+			for i=0, 5 do
+				for j=0, 5 do
+					list_backgrounds = list_backgrounds .. "box[".. 1.5+(i*1.25) ..",".. 0.25+(j*1.25) ..";1,1;]"
+				end
+			end
+		end
+		local size = "10.2,13"
 		meta:set_string("formspec",
-			"size[8,11]"..
-			"list[context;line1;1,0;6,1;]"..
-			"list[context;line2;1,1;6,1;]"..
-			"list[context;line3;1,2;6,1;]"..
-			"list[context;line4;1,3;6,1;]"..
-			"list[context;line5;1,4;6,1;]"..
-			"list[context;line6;1,5;6,1;]"..
-			"image[0,0;1,1;pipeworks_white.png]"..
-			"image[0,1;1,1;pipeworks_black.png]"..
-			"image[0,2;1,1;pipeworks_green.png]"..
-			"image[0,3;1,1;pipeworks_yellow.png]"..
-			"image[0,4;1,1;pipeworks_blue.png]"..
-			"image[0,5;1,1;pipeworks_red.png]"..
+			"formspec_version[2]"..
+			"size["..size.."]"..
+			pipeworks.fs_helpers.get_prepends(size)..
+			"list[context;line1;1.5,0.25;6,1;]"..
+			"list[context;line2;1.5,1.50;6,1;]"..
+			"list[context;line3;1.5,2.75;6,1;]"..
+			"list[context;line4;1.5,4.00;6,1;]"..
+			"list[context;line5;1.5,5.25;6,1;]"..
+			"list[context;line6;1.5,6.50;6,1;]"..
+			list_backgrounds..
+			"image[0.22,0.25;1,1;pipeworks_white.png]"..
+			"image[0.22,1.50;1,1;pipeworks_black.png]"..
+			"image[0.22,2.75;1,1;pipeworks_green.png]"..
+			"image[0.22,4.00;1,1;pipeworks_yellow.png]"..
+			"image[0.22,5.25;1,1;pipeworks_blue.png]"..
+			"image[0.22,6.50;1,1;pipeworks_red.png]"..
 			buttons_formspec..
-			"list[current_player;main;0,7;8,4;]" ..
+			--"list[current_player;main;0,8;8,4;]" ..
+			pipeworks.fs_helpers.get_inv(8)..
 			"listring[current_player;main]" ..
 			"listring[current_player;main]" ..
 			"listring[context;line1]" ..
@@ -163,25 +177,4 @@ if pipeworks.enable_mese_tube then
 				end,
 			},
 	})
-
-	minetest.register_craft( {
-		output = "pipeworks:mese_tube_000000 2",
-		recipe = {
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-			{ "", "default:mese_crystal", "" },
-			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
-		},
-	})
-
-	minetest.register_craft( {
-		type = "shapeless",
-		output = "pipeworks:mese_tube_000000",
-		recipe = {
-			"pipeworks:tube_1",
-			"default:mese_crystal_fragment",
-			"default:mese_crystal_fragment",
-			"default:mese_crystal_fragment",
-			"default:mese_crystal_fragment"
-		},
-	})
 end
diff --git a/teleport_tube.lua b/teleport_tube.lua
index e812b70..e888333 100644
--- a/teleport_tube.lua
+++ b/teleport_tube.lua
@@ -1,161 +1,330 @@
+
 local S = minetest.get_translator("pipeworks")
-local filename=minetest.get_worldpath() .. "/teleport_tubes"
+local filename = minetest.get_worldpath().."/teleport_tubes"  -- Only used for backward-compat
+local storage = minetest.get_mod_storage()
 
-local tp_tube_db = nil -- nil forces a read
-local tp_tube_db_version = 2.0
+local enable_logging = minetest.settings:get_bool("pipeworks_log_teleport_tubes", false)
 
--- cached rceiver list: hash(pos) => {receivers}
-local cache = {}
+local has_digilines = minetest.get_modpath("digilines")
 
-local function hash(pos)
-	return string.format("%.30g", minetest.hash_node_position(pos))
+-- V1: Serialized text file indexed by vector position.
+-- V2: Serialized text file indexed by hash position.
+-- V3: Mod storage using serialized tables.
+-- V4: Mod storage using "<can_receive>:<channel>" format.
+local tube_db_version = 4
+local tube_db = {}
+local receiver_cache = {}
+
+local function hash_pos(pos)
+	vector.round(pos)
+	return string.format("%.0f", minetest.hash_node_position(pos))
+end
+
+local function serialize_tube(tube)
+	return string.format("%d:%s", tube.cr, tube.channel)
+end
+
+local function deserialize_tube(hash, str)
+	local sep = str:sub(2, 2) == ":"
+	local cr = tonumber(str:sub(1, 1))
+	local channel = str:sub(3)
+	if sep and cr and channel then
+		local pos = minetest.get_position_from_hash(tonumber(hash))
+		return {x = pos.x, y = pos.y, z = pos.z, cr = cr, channel = channel}
+	end
 end
 
 local function save_tube_db()
-	local file, err = io.open(filename, "w")
-	if file then
-		tp_tube_db.version = tp_tube_db_version
-		file:write(minetest.serialize(tp_tube_db))
-		tp_tube_db.version = nil
-		io.close(file)
-	else
-		error(err)
+	receiver_cache = {}
+	local fields = {version = tube_db_version}
+	for key, val in pairs(tube_db) do
+		fields[key] = serialize_tube(val)
 	end
-	-- reset tp-tube cache
-	cache = {}
+	storage:from_table({fields = fields})
 end
 
-local function migrate_tube_db()
-		local tmp_db = {}
-		tp_tube_db.version = nil
-		for _, val in pairs(tp_tube_db) do
-			if(val.channel ~= "") then -- skip unconfigured tubes
-				tmp_db[hash(val)] = val
-			end
-		end
-		tp_tube_db = tmp_db
-		save_tube_db()
-end
-
-local function read_tube_db()
-	local file = io.open(filename, "r")
-	if file ~= nil then
-		local file_content = file:read("*all")
-		io.close(file)
-
-		if file_content and file_content ~= "" then
-			tp_tube_db = minetest.deserialize(file_content)
-			if(not tp_tube_db.version or tonumber(tp_tube_db.version) < tp_tube_db_version) then
-				migrate_tube_db()
-			end
-			tp_tube_db.version = nil -- we add it back when saving
-			return tp_tube_db -- we read sucessfully
-		end
-	end
-	tp_tube_db = {}
-	return tp_tube_db
-end
-
--- debug formatter for coordinates used below
-local fmt = function(pos)
-	return pos.x..", "..pos.y..", "..pos.z
-end
-
--- updates or adds a tube
-local function set_tube(pos, channel, can_receive)
-	local tubes = tp_tube_db or read_tube_db()
-	local hash = hash(pos)
-	local tube = tubes[hash]
-	if tube then
-		tube.channel = channel
-		tube.cr = can_receive
-		save_tube_db()
-		return
-	end
-
-	-- we haven't found any tp tube to update, so lets add it
-	-- but sanity check that the hash has not already been inserted.
-	-- if so, complain very loudly and refuse the update so the player knows something is amiss.
-	-- to catch regressions of https://github.com/minetest-mods/pipeworks/issues/166
-	local existing = tp_tube_db[hash]
-	if  existing ~= nil then
-		local e = "error"
-		minetest.log(e, "pipeworks teleport tube update refused due to position hash collision")
-		minetest.log(e, "collided hash: "..hash)
-		minetest.log(e, "tried-to-place tube: "..fmt(pos))
-		minetest.log(e, "existing tube: "..fmt(existing))
-		return
-	end
-
-	tp_tube_db[hash] = {x=pos.x,y=pos.y,z=pos.z,channel=channel,cr=can_receive}
-	save_tube_db()
+local function save_tube(hash)
+	local tube = tube_db[hash]
+	receiver_cache[tube.channel] = nil
+	storage:set_string(hash, serialize_tube(tube))
 end
 
 local function remove_tube(pos)
-	local tubes = tp_tube_db or read_tube_db()
-	tubes[hash(pos)] = nil
+	local hash = hash_pos(pos)
+	if tube_db[hash] then
+		receiver_cache[tube_db[hash].channel] = nil
+		tube_db[hash] = nil
+		storage:set_string(hash, "")
+	end
+end
+
+local function migrate_tube_db()
+	if storage:get_int("version") == 3 then
+		for key, val in pairs(storage:to_table().fields) do
+			if tonumber(key) then
+				tube_db[key] = minetest.deserialize(val)
+			elseif key ~= "version" then
+				error("Unknown field in teleport tube database: "..key)
+			end
+		end
+		save_tube_db()
+		return
+	end
+	local file = io.open(filename, "r")
+	if file then
+		local content = file:read("*all")
+		io.close(file)
+		if content and content ~= "" then
+			tube_db = minetest.deserialize(content)
+		end
+	end
+	local version = tube_db.version or 0
+	tube_db.version = nil
+	if version < 2 then
+		local tmp_db = {}
+		for _, val in pairs(tube_db) do
+			if val.channel ~= "" then  -- Skip unconfigured tubes
+				tmp_db[hash_pos(val)] = val
+			end
+		end
+		tube_db = tmp_db
+	end
 	save_tube_db()
 end
 
-local function read_node_with_vm(pos)
-	local vm = VoxelManip()
-	local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
-	local data = vm:get_data()
-	local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
-	return minetest.get_name_from_content_id(data[area:index(pos.x, pos.y, pos.z)])
-end
-
-local function get_receivers(pos, channel)
-	local hash = minetest.hash_node_position(pos)
-	if cache[hash] then
-		-- re-use cached result
-		return cache[hash]
-	end
-
-	local tubes = tp_tube_db or read_tube_db()
-	local receivers = {}
-	local dirty = false
-	for key, val in pairs(tubes) do
-		-- skip all non-receivers and the tube that it came from as early as possible, as this is called often
-		if (val.cr == 1 and val.channel == channel and (val.x ~= pos.x or val.y ~= pos.y or val.z ~= pos.z)) then
-			local is_loaded = (minetest.get_node_or_nil(val) ~= nil)
-			local node_name = is_loaded and minetest.get_node(pos).name or read_node_with_vm(val)
-
-			if minetest.registered_nodes[node_name] and minetest.registered_nodes[node_name].is_teleport_tube then
-				table.insert(receivers, val)
-			else
-				tp_tube_db[key] = nil
-				dirty = true
+local function read_tube_db()
+	local version = storage:get_int("version")
+	if version < tube_db_version then
+		migrate_tube_db()
+	elseif version > tube_db_version then
+		error("Cannot read teleport tube database of version "..version)
+	else
+		for key, val in pairs(storage:to_table().fields) do
+			if tonumber(key) then
+				tube_db[key] = deserialize_tube(key, val)
+			elseif key ~= "version" then
+				error("Unknown field in teleport tube database: "..key)
 			end
 		end
 	end
-	if dirty then
-		save_tube_db()
+	tube_db.version = nil
+end
+
+local function set_tube(pos, channel, cr)
+	local hash = hash_pos(pos)
+	local tube = tube_db[hash]
+	if tube then
+		if tube.channel ~= channel or tube.cr ~= cr then
+			tube.channel = channel
+			tube.cr = cr
+			save_tube(hash)
+		end
+	else
+		tube_db[hash] = {x = pos.x, y = pos.y, z = pos.z, channel = channel, cr = cr}
+		save_tube(hash)
+	end
+end
+
+local function get_receivers(pos, channel)
+	local hash = hash_pos(pos)
+	local cache = receiver_cache[channel] or {}
+	if cache[hash] then
+		return cache[hash]
+	end
+	local receivers = {}
+	for key, val in pairs(tube_db) do
+		if val.cr == 1 and val.channel == channel and not vector.equals(val, pos) then
+			minetest.load_area(val)
+			local node_name = minetest.get_node(val).name
+			if node_name:find("pipeworks:teleport_tube") then
+				table.insert(receivers, val)
+			else
+				remove_tube(val)
+			end
+		end
 	end
-	-- cache the result for next time
 	cache[hash] = receivers
+	receiver_cache[channel] = cache
 	return receivers
 end
 
-local function update_meta(meta, can_receive)
-	meta:set_int("can_receive", can_receive and 1 or 0)
-	local cr_state = can_receive and "on" or "off"
-	local itext = S("Channels are public by default").."\n"..
-		S("Use <player>:<channel> for fully private channels").."\n"..
-		S("Use <player>\\;<channel> for private receivers")
+local help_text = S("Channels are public by default").."\n"..
+	S("Use <player>:<channel> for fully private channels").."\n"..
+	S("Use <player>\\;<channel> for private receivers")
 
-	meta:set_string("formspec",
-		"size[8.5,3.5]"..
-		"image[0.2,o;1,1;pipeworks_teleport_tube_inv.png]"..
-		"label[1.2,0.2;"..S("Teleporting Tube").."]"..
-		"field[0.5,1.6;4.6,1;channel;"..S("Channel")..";${channel}]"..
-		"button[4.8,1.3;1.5,1;set_channel;"..S("Set").."]"..
-		"label[7.0,0;"..S("Receive").."]"..
-		"image_button[7.0,0.5;1,0.6;pipeworks_button_" .. cr_state .. ".png;cr" .. (can_receive and 0 or 1) .. ";;;false;pipeworks_button_interm.png]"..
-		"button_exit[6.3,1.3;2,1;close;"..S("Close").."]"..
-		"label[0.2,2.3;"..itext.."]"..
-		default.gui_bg..
-		default.gui_bg_img)
+local size = has_digilines and "8,5.9" or "8,4.4"
+
+local formspec = "formspec_version[2]size["..size.."]"..
+	pipeworks.fs_helpers.get_prepends(size)..
+	"image[0.5,0.3;1,1;pipeworks_teleport_tube_inv.png]"..
+	"label[1.75,0.8;"..S("Teleporting Tube").."]"..
+	"field[0.5,1.7;5,0.8;channel;"..S("Channel")..";${channel}]"..
+	"button_exit[5.5,1.7;2,0.8;save;"..S("Save").."]"..
+	"label[6.5,0.6;"..S("Receive").."]"..
+	"label[0.5,2.8;"..help_text.."]"
+
+if has_digilines then
+	formspec = formspec..
+		"field[0.5,4.6;5,0.8;digiline_channel;"..S("Digiline Channel")..";${digiline_channel}]"..
+		"button_exit[5.5,4.6;2,0.8;save;"..S("Save").."]"
+end
+
+local function update_meta(meta)
+	local channel = meta:get_string("channel")
+	local cr = meta:get_int("can_receive") == 1
+	if channel == "" then
+		meta:set_string("infotext", S("Unconfigured Teleportation Tube"))
+	else
+		local desc = cr and "sending and receiving" or "sending"
+		meta:set_string("infotext", S("Teleportation Tube @1 on '@2'", desc, channel))
+	end
+	local state = cr and "on" or "off"
+	meta:set_string("formspec", formspec..
+		"image_button[6.4,0.8;1,0.6;pipeworks_button_"..state..
+		".png;cr_"..state..";;;false;pipeworks_button_interm.png]")
+end
+
+local function update_tube(pos, channel, cr, player_name)
+	local meta = minetest.get_meta(pos)
+	if meta:get_string("channel") == channel and meta:get_int("can_receive") == cr then
+		return
+	end
+	if channel == "" then
+		meta:set_string("channel", "")
+		meta:set_int("can_receive", cr)
+		remove_tube(pos)
+		return
+	end
+	local name, mode = channel:match("^([^:;]+)([:;])")
+	if name and mode and name ~= player_name then
+		if mode == ":" then
+			minetest.chat_send_player(player_name,
+				S("Sorry, channel '@1' is reserved for exclusive use by @2", channel, name))
+			return
+		elseif mode == ";" and cr ~= 0 then
+			minetest.chat_send_player(player_name,
+				S("Sorry, receiving from channel '@1' is reserved for @2", channel, name))
+			return
+		end
+	end
+	meta:set_string("channel", channel)
+	meta:set_int("can_receive", cr)
+	set_tube(pos, channel, cr)
+end
+
+local function receive_fields(pos, _, fields, sender)
+	if not fields.channel or not pipeworks.may_configure(pos, sender) then
+		return
+	end
+	local meta = minetest.get_meta(pos)
+	local channel = fields.channel:trim()
+	local cr = meta:get_int("can_receive")
+	if fields.cr_on then
+		cr = 0
+	elseif fields.cr_off then
+		cr = 1
+	end
+	if has_digilines and fields.digiline_channel then
+		meta:set_string("digiline_channel", fields.digiline_channel)
+	end
+	update_tube(pos, channel, cr, sender:get_player_name())
+	update_meta(meta)
+end
+
+local function can_go(pos, node, velocity, stack)
+	velocity.x = 0
+	velocity.y = 0
+	velocity.z = 0
+	local src_meta = minetest.get_meta(pos)
+	local channel = src_meta:get_string("channel")
+	if channel == "" then
+		return {}
+	end
+	local receivers = get_receivers(pos, channel)
+	if #receivers == 0 then
+		return {}
+	end
+	local target = receivers[math.random(1, #receivers)]
+	if enable_logging then
+		local src_owner = src_meta:get_string("owner")
+		local dst_meta = minetest.get_meta(pos)
+		local dst_owner = dst_meta:get_string("owner")
+		minetest.log("action", string.format("[pipeworks] %s teleported from %s (owner=%s) to %s (owner=%s) via %s",
+			stack:to_string(), minetest.pos_to_string(pos), src_owner, minetest.pos_to_string(target), dst_owner, channel
+		))
+	end
+	pos.x = target.x
+	pos.y = target.y
+	pos.z = target.z
+	return pipeworks.meseadjlist
+end
+
+local function repair_tube(pos, node)
+	minetest.swap_node(pos, {name = node.name, param2 = node.param2})
+	pipeworks.scan_for_tube_objects(pos)
+	local meta = minetest.get_meta(pos)
+	local channel = meta:get_string("channel")
+	if channel ~= "" then
+		set_tube(pos, channel, meta:get_int("can_receive"))
+	end
+	update_meta(meta)
+end
+
+local function digiline_action(pos, _, digiline_channel, msg)
+	local meta = minetest.get_meta(pos)
+	if digiline_channel ~= meta:get_string("digiline_channel") then
+		return
+	end
+	local channel = meta:get_string("channel")
+	local can_receive = meta:get_int("can_receive")
+	if type(msg) == "string" then
+		channel = msg
+	elseif type(msg) == "table" then
+		if type(msg.channel) == "string" then
+			channel = msg.channel
+		end
+		if msg.can_receive == 1 or msg.can_receive == true then
+			can_receive = 1
+		elseif msg.can_receive == 0 or msg.can_receive == false then
+			can_receive = 0
+		end
+	else
+		return
+	end
+	local player_name = meta:get_string("owner")
+	update_tube(pos, channel, can_receive, player_name)
+	update_meta(meta)
+end
+
+local def = {
+	tube = {
+		can_go = can_go,
+		on_repair = repair_tube,
+	},
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_int("can_receive", 1)  -- Enabled by default
+		update_meta(meta)
+	end,
+	on_receive_fields = receive_fields,
+	on_destruct = remove_tube,
+}
+
+if has_digilines then
+	def.after_place_node = function(pos, placer)
+		-- Set owner for digilines
+		minetest.get_meta(pos):set_string("owner", placer:get_player_name())
+		pipeworks.after_place(pos)
+	end
+	def.digiline = {
+		receptor = {
+			rules = pipeworks.digilines_rules,
+		},
+		effector = {
+			rules = pipeworks.digilines_rules,
+			action = digiline_action,
+		}
+	}
 end
 
 pipeworks.register_tube("pipeworks:teleport_tube", {
@@ -165,116 +334,14 @@ pipeworks.register_tube("pipeworks:teleport_tube", {
 	plain = { "pipeworks_teleport_tube_plain.png" },
 	ends = { "pipeworks_teleport_tube_end.png" },
 	short = "pipeworks_teleport_tube_short.png",
-	node_def = {
-		is_teleport_tube = true,
-		tube = {
-			can_go = function(pos,node,velocity,stack)
-				velocity.x = 0
-				velocity.y = 0
-				velocity.z = 0
-
-				local channel = minetest.get_meta(pos):get_string("channel")
-				if channel == "" then return {} end
-
-				local target = get_receivers(pos, channel)
-				if target[1] == nil then return {} end
-
-				local d = math.random(1,#target)
-				pos.x = target[d].x
-				pos.y = target[d].y
-				pos.z = target[d].z
-				return pipeworks.meseadjlist
-			end
-		},
-		on_construct = function(pos)
-			local meta = minetest.get_meta(pos)
-			update_meta(meta, true)
-			meta:set_string("infotext", S("Unconfigured Teleportation Tube"))
-		end,
-		on_receive_fields = function(pos,formname,fields,sender)
-			if not fields.channel -- ignore escaping or clientside manipulation of the form
-			or (fields.quit and not fields.key_enter_field)
-			or not pipeworks.may_configure(pos, sender) then
-				return
-			end
-			local new_channel = tostring(fields.channel):trim()
-
-			local meta = minetest.get_meta(pos)
-			local can_receive = meta:get_int("can_receive")
-
-			-- check for private channels each time before actually changing anything
-			-- to not even allow switching between can_receive states of private channels
-			if new_channel ~= "" then
-				local sender_name = sender:get_player_name()
-				local name, mode = new_channel:match("^([^:;]+)([:;])")
-				if name and mode and name ~= sender_name then
-					--channels starting with '[name]:' can only be used by the named player
-					if mode == ":" then
-						minetest.chat_send_player(sender_name, S("Sorry, channel '@1' is reserved for exclusive use by @2",
-							new_channel, name))
-						return
-
-					--channels starting with '[name];' can be used by other players, but cannot be received from
-					elseif mode == ";" and (fields.cr1 or (can_receive ~= 0 and not fields.cr0)) then
-						minetest.chat_send_player(sender_name, S("Sorry, receiving from channel '@1' is reserved for @2",
-							new_channel, name))
-						return
-					end
-				end
-			end
-
-			local dirty = false
-
-			-- was the channel changed?
-			local channel = meta:get_string("channel")
-			if new_channel ~= channel and (fields.key_enter_field == "channel" or fields.set_channel) then
-				channel = new_channel
-				meta:set_string("channel", channel)
-				dirty = true
-			end
-
-			-- test if a can_receive button was pressed
-			if fields.cr0 and can_receive ~= 0 then
-				can_receive = 0
-				update_meta(meta, false)
-				dirty = true
-			elseif fields.cr1 and can_receive ~= 1 then
-				can_receive = 1
-				update_meta(meta, true)
-				dirty = true
-			end
-
-			-- save if we changed something, handle the empty channel while we're at it
-			if dirty then
-				if channel ~= "" then
-					set_tube(pos, channel, can_receive)
-					local cr_description = (can_receive == 1) and "sending and receiving" or "sending"
-					meta:set_string("infotext", S("Teleportation Tube @1 on '@2'", cr_description, channel))
-				else
-					-- remove empty channel tubes, to not have to search through them
-					remove_tube(pos)
-					meta:set_string("infotext", S("Unconfigured Teleportation Tube"))
-				end
-			end
-		end,
-		on_destruct = function(pos)
-			remove_tube(pos)
-		end
-	},
-})
-minetest.register_craft( {
-	output = "pipeworks:teleport_tube_1 2",
-	recipe = {
-	        { "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-	        { "default:desert_stone", "default:mese", "default:desert_stone" },
-	        { "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
-	},
+	node_def = def,
 })
 
-if minetest.get_modpath("mesecons_mvps") ~= nil then
+if minetest.get_modpath("mesecons_mvps") then
+	-- Update tubes when moved by pistons
 	mesecon.register_on_mvps_move(function(moved_nodes)
 		for _, n in ipairs(moved_nodes) do
-			if string.find(n.node.name, "pipeworks:teleport_tube") ~= nil then
+			if n.node.name:find("pipeworks:teleport_tube") then
 				local meta = minetest.get_meta(n.pos)
 				set_tube(n.pos, meta:get_string("channel"), meta:get_int("can_receive"))
 			end
@@ -284,8 +351,21 @@ end
 
 -- Expose teleport tube database API for other mods
 pipeworks.tptube = {
-	hash = hash,
+	version = tube_db_version,
+	hash = hash_pos,
+	get_db = function() return tube_db end,
 	save_tube_db = save_tube_db,
-	get_db = function() return tp_tube_db or read_tube_db() end,
-	tp_tube_db_version = tp_tube_db_version
+	set_tube = set_tube,
+	save_tube = save_tube,
+	update_tube = update_tube,
+	update_meta = function(meta, cr)
+		-- Legacy behaviour
+		if cr ~= nil then
+			meta:set_int("can_receive", cr and 1 or 0)
+		end
+		update_meta(meta)
+	end,
 }
+
+-- Load the database
+read_tube_db()
diff --git a/trashcan.lua b/trashcan.lua
index 361d73e..7c3d4e9 100644
--- a/trashcan.lua
+++ b/trashcan.lua
@@ -10,7 +10,8 @@ minetest.register_node("pipeworks:trashcan", {
 		"pipeworks_trashcan_side.png",
 		"pipeworks_trashcan_side.png",
 	},
-	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1},
+	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1, dig_generic = 4, axey=5},
+	_mcl_hardness=1.6,
 	tube = {
 		insert_object = function(pos, node, stack, direction)
 			return ItemStack("")
@@ -20,17 +21,24 @@ minetest.register_node("pipeworks:trashcan", {
 	},
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
+		local size = "10.2,9"
+		local list_background = ""
+		if minetest.get_modpath("i3") then
+			list_background = "style_type[box;colors=#666]box[4.5,2;1,1;]"
+		end
 		meta:set_string("formspec",
-				"size[8,7]"..
-				"item_image[0,0;1,1;pipeworks:trashcan]"..
-				"label[1,0;"..S("Trash Can").."]"..
-				"list[context;trash;3.5,1;1,1;]"..
-				default.gui_bg..
-				default.gui_bg_img..
-				default.gui_slots..
-				default.get_hotbar_bg(0,3) ..
-				"list[current_player;main;0,3;8,4;]" ..
-				"listring[]")
+			"formspec_version[2]" ..
+			"size["..size.."]"..
+			pipeworks.fs_helpers.get_prepends(size) ..
+			"item_image[0.5,0.5;1,1;pipeworks:trashcan]"..
+			"label[1.5,1;"..S("Trash Can").."]"..
+			list_background..
+			"list[context;trash;4.5,2;1,1;]"..
+			--"list[current_player;main;0,3;8,4;]" ..
+			pipeworks.fs_helpers.get_inv(4)..
+			"listring[context;trash]"..
+			"listring[current_player;main]"
+		)
 		meta:set_string("infotext", S("Trash Can"))
 		meta:get_inventory():set_size("trash", 1)
 	end,
@@ -41,12 +49,3 @@ minetest.register_node("pipeworks:trashcan", {
 	end,
 })
 pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:trashcan"
-
-minetest.register_craft({
-	output = "pipeworks:trashcan",
-	recipe = {
-		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-		{ "default:steel_ingot", "", "default:steel_ingot" },
-		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-	},
-})
diff --git a/tube_registration.lua b/tube_registration.lua
index e1859f9..0028623 100644
--- a/tube_registration.lua
+++ b/tube_registration.lua
@@ -61,13 +61,13 @@ local register_one_tube = function(name, tname, dropname, desc, plain, noctrs, e
 		outimgs[vti[v]] = ends[v]
 	end
 
-	local tgroups = {snappy = 3, tube = 1, tubedevice = 1, not_in_creative_inventory = 1}
+	local tgroups = {snappy = 3, tube = 1, tubedevice = 1, not_in_creative_inventory = 1, dig_generic = 4, axey=5}
 	local tubedesc = string.format("%s %s", desc, dump(connects))
 	local iimg = type(plain[1]) == "table" and plain[1].name or plain[1]
 	local wscale = {x = 1, y = 1, z = 1}
 
 	if #connects == 0 then
-		tgroups = {snappy = 3, tube = 1, tubedevice = 1}
+		tgroups = {snappy = 3, tube = 1, tubedevice = 1, dig_generic = 4, axey=5}
 		tubedesc = desc
 		iimg=inv
 		outimgs = {
@@ -80,6 +80,10 @@ local register_one_tube = function(name, tname, dropname, desc, plain, noctrs, e
 		wscale = {x = 1, y = 1, z = 0.01}
 	end
 
+	for i, tile in ipairs(outimgs) do
+		outimgs[i] = pipeworks.make_tube_tile(tile)
+	end
+
 	local rname = string.format("%s_%s", name, tname)
 	table.insert(tubenodes, rname)
 
@@ -102,7 +106,10 @@ local register_one_tube = function(name, tname, dropname, desc, plain, noctrs, e
 			fixed = outboxes
 		},
 		groups = tgroups,
-		sounds = default.node_sound_wood_defaults(),
+		_mcl_hardness=1.6,
+		_sound_def = {
+			key = "node_sound_wood_defaults",
+		},
 		walkable = true,
 		stack_max = 99,
 		basename = name,
diff --git a/vacuum_tubes.lua b/vacuum_tubes.lua
index 927480b..91ed02b 100644
--- a/vacuum_tubes.lua
+++ b/vacuum_tubes.lua
@@ -1,4 +1,37 @@
+
 local S = minetest.get_translator("pipeworks")
+
+local enable_max = minetest.settings:get_bool("pipeworks_enable_items_per_tube_limit", true)
+local max_items = tonumber(minetest.settings:get("pipeworks_max_items_per_tube")) or 30
+max_items = math.ceil(max_items / 2)  -- Limit vacuuming to half the max limit
+
+local function vacuum(pos, radius)
+	radius = radius + 0.5
+	local min_pos = vector.subtract(pos, radius)
+	local max_pos = vector.add(pos, radius)
+	local count = 0
+	for _, obj in pairs(minetest.get_objects_in_area(min_pos, max_pos)) do
+		local entity = obj:get_luaentity()
+		if entity and entity.name == "__builtin:item" then
+			if entity.itemstring ~= "" then
+				pipeworks.tube_inject_item(pos, pos, vector.new(0, 0, 0), entity.itemstring)
+				entity.itemstring = ""
+				count = count + 1
+			end
+			obj:remove()
+			if enable_max and count >= max_items then
+				return  -- Don't break tube by vacuuming too many items
+			end
+		end
+	end
+end
+
+local function set_timer(pos)
+	local timer = minetest.get_node_timer(pos)
+	-- Randomize timer so not all tubes vacuum at the same time
+	timer:start(math.random(10, 20) * 0.1)
+end
+
 if pipeworks.enable_sand_tube then
 	pipeworks.register_tube("pipeworks:sand_tube", {
 		description = S("Vacuuming Pneumatic Tube Segment"),
@@ -6,123 +39,64 @@ if pipeworks.enable_sand_tube then
 		short = "pipeworks_sand_tube_short.png",
 		noctr = {"pipeworks_sand_tube_noctr.png"},
 		plain = {"pipeworks_sand_tube_plain.png"},
-		ends  = {"pipeworks_sand_tube_end.png"},
-		node_def = {groups = {vacuum_tube = 1}},
-	})
-
-	minetest.register_craft( {
-		output = "pipeworks:sand_tube_1 2",
-		recipe = {
-			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet"},
-			{"group:sand",                 "group:sand",                 "group:sand"},
-			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet"}
-		},
-	})
-
-	minetest.register_craft( {
-		output = "pipeworks:sand_tube_1",
-		recipe = {
-			{"group:sand", "pipeworks:tube_1", "group:sand"},
+		ends = {"pipeworks_sand_tube_end.png"},
+		node_def = {
+			groups = {vacuum_tube = 1},
+			on_construct = set_timer,
+			on_timer = function(pos, elapsed)
+				vacuum(pos, 2)
+				set_timer(pos)
+			end,
 		},
 	})
 end
 
 if pipeworks.enable_mese_sand_tube then
+	local formspec = "formspec_version[2]size[8,3]"..
+		pipeworks.fs_helpers.get_prepends("8,3")..
+		"image[0.5,0.3;1,1;pipeworks_mese_sand_tube_inv.png]"..
+		"label[1.75,0.8;"..S("Adjustable Vacuuming Tube").."]"..
+		"field[0.5,1.7;5,0.8;dist;"..S("Radius")..";${dist}]"..
+		"button_exit[5.5,1.7;2,0.8;save;"..S("Save").."]"
+
 	pipeworks.register_tube("pipeworks:mese_sand_tube", {
-			description = S("Adjustable Vacuuming Pneumatic Tube Segment"),
-			inventory_image = "pipeworks_mese_sand_tube_inv.png",
-			short = "pipeworks_mese_sand_tube_short.png",
-			noctr = {"pipeworks_mese_sand_tube_noctr.png"},
-			plain = {"pipeworks_mese_sand_tube_plain.png"},
-			ends  = {"pipeworks_mese_sand_tube_end.png"},
-			node_def = {
-				groups = {vacuum_tube = 1},
-				on_construct = function(pos)
-					local meta = minetest.get_meta(pos)
-					meta:set_int("dist", 0)
-					meta:set_string("formspec",
-						"size[6.0,2.2]"..
-						"image[0.2,0;1,1;pipeworks_mese_sand_tube_inv.png]"..
-						"label[1.2,0.2;"..S("Adjustable Vacuuming Tube").."]"..
-						"field[0.5,1.6;2.1,1;dist;"..S("Radius")..";${dist}]"..
-						"button[2.3,1.3;1.5,1;set_dist;"..S("Set").."]"..
-						"button_exit[3.8,1.3;2,1;close;"..S("Close").."]"..
-						default.gui_bg..
-						default.gui_bg_img)
-					meta:set_string("infotext", S("Adjustable Vacuuming Pneumatic Tube Segment"))
-				end,
-				on_receive_fields = function(pos,formname,fields,sender)
-					if (fields.quit and not fields.key_enter_field)
-					or (fields.key_enter_field ~= "dist" and not fields.set_dist)
-					or not pipeworks.may_configure(pos, sender) then
-						return
-					end
-
-					local meta = minetest.get_meta(pos)
-					local dist = tonumber(fields.dist)
-					if dist then
-						dist = math.max(0, dist)
-						dist = math.min(8, dist)
-						meta:set_int("dist", dist)
-						meta:set_string("infotext", S("Adjustable Vacuuming Pneumatic Tube Segment (@1m)", dist))
-					end
-				end,
-			},
-	})
-
-	minetest.register_craft( {
-		output = "pipeworks:mese_sand_tube_1 2",
-		recipe = {
-			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
-			{"group:sand",                 "default:mese_crystal",       "group:sand" },
-			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
-		},
-	})
-
-	minetest.register_craft( {
-		type = "shapeless",
-		output = "pipeworks:mese_sand_tube_1",
-		recipe = {
-			"pipeworks:sand_tube_1",
-			"default:mese_crystal_fragment",
-			"default:mese_crystal_fragment",
-			"default:mese_crystal_fragment",
-			"default:mese_crystal_fragment"
-		},
-	})
-end
-
-local function vacuum(pos, radius)
-	radius = radius + 0.5
-	for _, object in pairs(minetest.get_objects_inside_radius(pos, math.sqrt(3) * radius)) do
-		local lua_entity = object:get_luaentity()
-		if not object:is_player() and lua_entity and lua_entity.name == "__builtin:item" then
-			local obj_pos = object:get_pos()
-			local minpos = vector.subtract(pos, radius)
-			local maxpos = vector.add(pos, radius)
-			if  obj_pos.x >= minpos.x and obj_pos.x <= maxpos.x
-			and obj_pos.y >= minpos.y and obj_pos.y <= maxpos.y
-			and obj_pos.z >= minpos.z and obj_pos.z <= maxpos.z then
-				if lua_entity.itemstring ~= "" then
-					pipeworks.tube_inject_item(pos, pos, vector.new(0, 0, 0), lua_entity.itemstring)
-					lua_entity.itemstring = ""
+		description = S("Adjustable Vacuuming Tube"),
+		inventory_image = "pipeworks_mese_sand_tube_inv.png",
+		short = "pipeworks_mese_sand_tube_short.png",
+		noctr = {"pipeworks_mese_sand_tube_noctr.png"},
+		plain = {"pipeworks_mese_sand_tube_plain.png"},
+		ends = {"pipeworks_mese_sand_tube_end.png"},
+		node_def = {
+			groups = {vacuum_tube = 1},
+			on_construct = function(pos)
+				local meta = minetest.get_meta(pos)
+				meta:set_int("dist", 2)
+				meta:set_string("formspec", formspec)
+				meta:set_string("infotext", S("Adjustable Vacuuming Tube (@1m)", 2))
+				set_timer(pos)
+			end,
+			on_timer = function(pos, elapsed)
+				local radius = minetest.get_meta(pos):get_int("dist")
+				vacuum(pos, radius)
+				set_timer(pos)
+			end,
+			on_receive_fields = function(pos, _, fields, sender)
+				if not fields.dist or not pipeworks.may_configure(pos, sender) then
+					return
 				end
-				object:remove()
-			end
-		end
-	end
+				local meta = minetest.get_meta(pos)
+				local dist = math.min(math.max(tonumber(fields.dist) or 0, 0), 8)
+				meta:set_int("dist", dist)
+				meta:set_string("infotext", S("Adjustable Vacuuming Tube (@1m)", dist))
+			end,
+		},
+	})
 end
 
-minetest.register_abm({nodenames = {"group:vacuum_tube"},
-	interval = 1,
-	chance = 1,
-	label = "Vacuum tubes",
-	action = function(pos, node, active_object_count, active_object_count_wider)
-		if node.name:find("pipeworks:sand_tube") then
-			vacuum(pos, 2)
-		else
-			local radius = minetest.get_meta(pos):get_int("dist")
-			vacuum(pos, radius)
-		end
-	end
+minetest.register_lbm({
+	label = "Vacuum tube node timer starter",
+	name = "pipeworks:vacuum_tube_start",
+	nodenames = {"group:vacuum_tube"},
+	run_at_every_load = false,
+	action = set_timer,
 })
diff --git a/wielder.lua b/wielder.lua
index 22df13f..e24b8ce 100644
--- a/wielder.lua
+++ b/wielder.lua
@@ -6,13 +6,28 @@ local function delay(x)
 end
 
 local function set_wielder_formspec(data, meta)
+	local size = "10.2,"..(7+data.wield_inv_height)
+	local list_background = ""
+	if minetest.get_modpath("i3") then
+		list_background = "style_type[box;colors=#666]"
+		for i=0, data.wield_inv_height-1 do
+			for j=0, data.wield_inv_width-1 do
+				list_background = list_background .. "box[".. ((10-data.wield_inv_width)*0.5)+(i*1.25) ..",".. 1+(j*1.25) ..";1,1;]"
+			end
+		end
+	end
 	meta:set_string("formspec",
-			"size[8,"..(6+data.wield_inv_height)..";]"..
-			"item_image[0,0;1,1;"..data.name_base.."_off]"..
-			"label[1,0;"..minetest.formspec_escape(data.description).."]"..
-			"list[current_name;"..minetest.formspec_escape(data.wield_inv_name)..";"..((8-data.wield_inv_width)*0.5)..",1;"..data.wield_inv_width..","..data.wield_inv_height..";]"..
-			"list[current_player;main;0,"..(2+data.wield_inv_height)..";8,4;]" ..
-			"listring[]")
+		"formspec_version[2]" ..
+		"size["..size.."]"..
+		pipeworks.fs_helpers.get_prepends(size)..
+		"item_image[0.5,0.5;1,1;"..data.name_base.."_off]"..
+		"label[1.5,1;"..minetest.formspec_escape(data.description).."]"..
+		list_background ..
+		"list[context;"..minetest.formspec_escape(data.wield_inv_name)..";"..((10-data.wield_inv_width)*0.5)..",1;"..data.wield_inv_width..","..data.wield_inv_height..";]"..
+		pipeworks.fs_helpers.get_inv((2+data.wield_inv_height)) ..
+		"listring[context;"..minetest.formspec_escape(data.wield_inv_name).."]" ..
+		"listring[current_player;main]"
+	)
 	meta:set_string("infotext", data.description)
 end
 
@@ -131,7 +146,7 @@ local function register_wielder(data)
 	data.fixup_node = data.fixup_node or function (pos, node) end
 	data.fixup_oldmetadata = data.fixup_oldmetadata or function (m) return m end
 	for _, state in ipairs({ "off", "on" }) do
-		local groups = { snappy=2, choppy=2, oddly_breakable_by_hand=2, mesecon=2, tubedevice=1, tubedevice_receiver=1 }
+		local groups = { snappy=2, choppy=2, oddly_breakable_by_hand=2, mesecon=2, tubedevice=1, tubedevice_receiver=1, axey=5 }
 		if state == "on" then groups.not_in_creative_inventory = 1 end
 		local tile_images = {}
 		for _, face in ipairs({ "top", "bottom", "side2", "side1", "back", "front" }) do
@@ -184,7 +199,10 @@ local function register_wielder(data)
 			paramtype2 = "facedir",
 			tubelike = 1,
 			groups = groups,
-			sounds = default.node_sound_stone_defaults(),
+			_mcl_hardness=0.6,
+			_sound_def = {
+				key = "node_sound_stone_defaults",
+			},
 			drop = data.name_base.."_off",
 			on_construct = function(pos)
 				local meta = minetest.get_meta(pos)
@@ -319,6 +337,10 @@ if pipeworks.enable_node_breaker then
 		masquerade_as_owner = true,
 		sneak = false,
 		act = function(virtplayer, pointed_thing)
+			if minetest.is_protected(vector.add(virtplayer:get_pos(), assumed_eye_pos), virtplayer:get_player_name()) then
+				return
+			end
+
 			--local dname = "nodebreaker.act() "
 			local wieldstack = virtplayer:get_wielded_item()
 			local oldwieldstack = ItemStack(wieldstack)
@@ -372,14 +394,6 @@ if pipeworks.enable_node_breaker then
 	}
 	register_wielder(data)
 	pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:nodebreaker_off"
-	minetest.register_craft({
-		output = "pipeworks:nodebreaker_off",
-		recipe = {
-			{ "basic_materials:gear_steel", "basic_materials:gear_steel",   "basic_materials:gear_steel"    },
-			{ "default:stone", "mesecons:piston",   "default:stone" },
-			{ "group:wood",    "mesecons:mesecon",  "group:wood" },
-		}
-	})
 	-- aliases for when someone had technic installed, but then uninstalled it but not pipeworks
 	minetest.register_alias("technic:nodebreaker_off", "pipeworks:nodebreaker_off")
 	minetest.register_alias("technic:nodebreaker_on", "pipeworks:nodebreaker_on")
@@ -418,20 +432,16 @@ if pipeworks.enable_deployer then
 		masquerade_as_owner = true,
 		sneak = false,
 		act = function(virtplayer, pointed_thing)
+			if minetest.is_protected(vector.add(virtplayer:get_pos(), assumed_eye_pos), virtplayer:get_player_name()) then
+				return
+			end
+
 			local wieldstack = virtplayer:get_wielded_item()
 			virtplayer:set_wielded_item((minetest.registered_items[wieldstack:get_name()] or {on_place=minetest.item_place}).on_place(wieldstack, virtplayer, pointed_thing) or wieldstack)
 		end,
 		eject_drops = false,
 	})
 	pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:deployer_off"
-	minetest.register_craft({
-		output = "pipeworks:deployer_off",
-		recipe = {
-			{ "group:wood",    "default:chest",    "group:wood"    },
-			{ "default:stone", "mesecons:piston",  "default:stone" },
-			{ "default:stone", "mesecons:mesecon", "default:stone" },
-		}
-	})
 	-- aliases for when someone had technic installed, but then uninstalled it but not pipeworks
 	minetest.register_alias("technic:deployer_off", "pipeworks:deployer_off")
 	minetest.register_alias("technic:deployer_on", "pipeworks:deployer_on")
@@ -460,12 +470,4 @@ if pipeworks.enable_dispenser then
 		eject_drops = false,
 	})
 	pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:dispenser_off"
-	minetest.register_craft({
-		output = "pipeworks:dispenser_off",
-		recipe = {
-			{ "default:desert_sand", "default:chest",    "default:desert_sand" },
-			{ "default:stone",       "mesecons:piston",  "default:stone"       },
-			{ "default:stone",       "mesecons:mesecon", "default:stone"       },
-		}
-	})
 end