diff --git a/stairsplus/defs.lua b/stairsplus/defs.lua
new file mode 100644
index 0000000..a7b7bca
--- /dev/null
+++ b/stairsplus/defs.lua
@@ -0,0 +1,409 @@
+--[[
+More Blocks: registrations
+
+Copyright (c) 2011-2018 Hugo Locurcio and contributors.
+Licensed under the zlib license. See LICENSE.md for more information.
+--]]
+
+
+local box_slope = {
+	type = "fixed",
+	fixed = {
+		{-0.5,  -0.5,  -0.5, 0.5, -0.25, 0.5},
+		{-0.5, -0.25, -0.25, 0.5,     0, 0.5},
+		{-0.5,     0,     0, 0.5,  0.25, 0.5},
+		{-0.5,  0.25,  0.25, 0.5,   0.5, 0.5}
+	}
+}
+
+local box_slope_half = {
+	type = "fixed",
+	fixed = {
+		{-0.5, -0.5,   -0.5,  0.5, -0.375, 0.5},
+		{-0.5, -0.375, -0.25, 0.5, -0.25,  0.5},
+		{-0.5, -0.25,  0,    0.5, -0.125, 0.5},
+		{-0.5, -0.125, 0.25, 0.5,  0,     0.5},
+	}
+}
+
+local box_slope_half_raised = {
+	type = "fixed",
+	fixed = {
+		{-0.5, -0.5,   -0.5,  0.5, 0.125, 0.5},
+		{-0.5, 0.125, -0.25, 0.5, 0.25,  0.5},
+		{-0.5, 0.25,  0,    0.5, 0.375, 0.5},
+		{-0.5, 0.375, 0.25, 0.5,  0.5,     0.5},
+	}
+}
+
+--==============================================================
+
+local box_slope_inner = {
+	type = "fixed",
+	fixed = {
+		{-0.5, -0.5, -0.5, 0.5, -0.25, 0.5},
+		{-0.5, -0.5, -0.25, 0.5, 0, 0.5},
+		{-0.5, -0.5, -0.5, 0.25, 0, 0.5},
+		{-0.5, 0, -0.5, 0, 0.25, 0.5},
+		{-0.5, 0, 0, 0.5, 0.25, 0.5},
+		{-0.5, 0.25, 0.25, 0.5, 0.5, 0.5},
+		{-0.5, 0.25, -0.5, -0.25, 0.5, 0.5},
+	}
+}
+
+local box_slope_inner_half = {
+	type = "fixed",
+	fixed = {
+		{-0.5, -0.5, -0.5, 0.5, -0.375, 0.5},
+		{-0.5, -0.375, -0.25, 0.5, -0.25, 0.5},
+		{-0.5, -0.375, -0.5, 0.25, -0.25, 0.5},
+		{-0.5, -0.25, -0.5, 0, -0.125, 0.5},
+		{-0.5, -0.25, 0, 0.5, -0.125, 0.5},
+		{-0.5, -0.125, 0.25, 0.5, 0, 0.5},
+		{-0.5, -0.125, -0.5, -0.25, 0, 0.5},
+	}
+}
+
+local box_slope_inner_half_raised = {
+	type = "fixed",
+	fixed = {
+		{-0.5, -0.5, -0.5, 0.5, 0.125, 0.5},
+		{-0.5, 0.125, -0.25, 0.5, 0.25, 0.5},
+		{-0.5, 0.125, -0.5, 0.25, 0.25, 0.5},
+		{-0.5, 0.25, -0.5, 0, 0.375, 0.5},
+		{-0.5, 0.25, 0, 0.5, 0.375, 0.5},
+		{-0.5, 0.375, 0.25, 0.5, 0.5, 0.5},
+		{-0.5, 0.375, -0.5, -0.25, 0.5, 0.5},
+	}
+}
+
+--==============================================================
+
+local box_slope_outer = {
+	type = "fixed",
+	fixed = {
+		{-0.5,  -0.5,  -0.5,   0.5, -0.25, 0.5},
+		{-0.5, -0.25, -0.25,  0.25,     0, 0.5},
+		{-0.5,     0,     0,     0,  0.25, 0.5},
+		{-0.5,  0.25,  0.25, -0.25,   0.5, 0.5}
+	}
+}
+
+local box_slope_outer_half = {
+	type = "fixed",
+	fixed = {
+		{-0.5,  -0.5,  -0.5,   0.5, -0.375, 0.5},
+		{-0.5, -0.375, -0.25,  0.25, -0.25, 0.5},
+		{-0.5,  -0.25,     0,     0, -0.125, 0.5},
+		{-0.5,  -0.125,  0.25, -0.25, 0, 0.5}
+	}
+}
+
+local box_slope_outer_half_raised = {
+	type = "fixed",
+	fixed = {
+		{-0.5,  -0.5,  -0.5,   0.5, 0.125, 0.5},
+		{-0.5, 0.125, -0.25,  0.25, 0.25, 0.5},
+		{-0.5,  0.25,     0,     0, 0.375, 0.5},
+		{-0.5,  0.375,  0.25, -0.25, 0.5, 0.5}
+	}
+}
+
+stairsplus.defs = {
+	["micro"] = {
+		[""] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, 0, 0.5},
+			},
+		},
+		["_1"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, -0.4375, 0.5},
+			},
+		},
+		["_2"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, -0.375, 0.5},
+			},
+		},
+		["_4"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, -0.25, 0.5},
+			},
+		},
+		["_12"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, 0.25, 0.5},
+			},
+		},
+		["_14"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, 0.375, 0.5},
+			},
+		},
+		["_15"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0, 0.4375, 0.5},
+			},
+		}
+	},
+	["panel"] = {
+		[""] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, 0, 0.5},
+			},
+		},
+		["_1"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, -0.4375, 0.5},
+			},
+		},
+		["_2"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, -0.375, 0.5},
+			},
+		},
+		["_4"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, -0.25, 0.5},
+			},
+		},
+		["_12"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, 0.25, 0.5},
+			},
+		},
+		["_14"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, 0.375, 0.5},
+			},
+		},
+		["_15"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {-0.5, -0.5, 0, 0.5, 0.4375, 0.5},
+			},
+		}
+	},
+	["slab"] = {
+		[""] = 8,
+		["_quarter"] = 4,
+		["_three_quarter"] = 12,
+		["_1"] = 1,
+		["_2"] = 2,
+		["_14"] = 14,
+		["_15"] = 15,
+		["_two_sides"] = {
+			{ -0.5, -0.5, -0.5, 0.5, -7/16, 7/16 },
+			{ -0.5, -0.5, 7/16, 0.5, 0.5, 0.5 }
+		},
+		["_three_sides"] = {
+			{ -7/16, -0.5, -0.5, 0.5, -7/16, 7/16 },
+			{ -7/16, -0.5, 7/16, 0.5, 0.5, 0.5 },
+			{ -0.5, -0.5, -0.5, -7/16, 0.5, 0.5 }
+		},
+		["_three_sides_u"] = {
+			{ -0.5, -0.5, -0.5, 0.5, 0.5, -7/16 },
+			{ -0.5, -0.5, -7/16, 0.5, -7/16, 7/16 },
+			{ -0.5, -0.5, 7/16, 0.5, 0.5, 0.5 }
+		}
+	},
+	["slope"] = {
+		[""] = {
+			mesh = "moreblocks_slope.obj",
+			collision_box = box_slope,
+			selection_box = box_slope,
+
+		},
+		["_half"] = {
+			mesh = "moreblocks_slope_half.obj",
+			collision_box = box_slope_half,
+			selection_box = box_slope_half,
+		},
+		["_half_raised"] = {
+			mesh = "moreblocks_slope_half_raised.obj",
+			collision_box = box_slope_half_raised,
+			selection_box = box_slope_half_raised,
+		},
+
+		--==============================================================
+
+		["_inner"] = {
+			mesh = "moreblocks_slope_inner.obj",
+			collision_box = box_slope_inner,
+			selection_box = box_slope_inner,
+		},
+		["_inner_half"] = {
+			mesh = "moreblocks_slope_inner_half.obj",
+			collision_box = box_slope_inner_half,
+			selection_box = box_slope_inner_half,
+		},
+		["_inner_half_raised"] = {
+			mesh = "moreblocks_slope_inner_half_raised.obj",
+			collision_box = box_slope_inner_half_raised,
+			selection_box = box_slope_inner_half_raised,
+		},
+
+		--==============================================================
+
+		["_inner_cut"] = {
+			mesh = "moreblocks_slope_inner_cut.obj",
+			collision_box = box_slope_inner,
+			selection_box = box_slope_inner,
+		},
+		["_inner_cut_half"] = {
+			mesh = "moreblocks_slope_inner_cut_half.obj",
+			collision_box = box_slope_inner_half,
+			selection_box = box_slope_inner_half,
+		},
+		["_inner_cut_half_raised"] = {
+			mesh = "moreblocks_slope_inner_cut_half_raised.obj",
+			collision_box = box_slope_inner_half_raised,
+			selection_box = box_slope_inner_half_raised,
+		},
+
+		--==============================================================
+
+		["_outer"] = {
+			mesh = "moreblocks_slope_outer.obj",
+			collision_box = box_slope_outer,
+			selection_box = box_slope_outer,
+		},
+		["_outer_half"] = {
+			mesh = "moreblocks_slope_outer_half.obj",
+			collision_box = box_slope_outer_half,
+			selection_box = box_slope_outer_half,
+		},
+		["_outer_half_raised"] = {
+			mesh = "moreblocks_slope_outer_half_raised.obj",
+			collision_box = box_slope_outer_half_raised,
+			selection_box = box_slope_outer_half_raised,
+		},
+
+		--==============================================================
+
+		["_outer_cut"] = {
+			mesh = "moreblocks_slope_outer_cut.obj",
+			collision_box = box_slope_outer,
+			selection_box = box_slope_outer,
+		},
+		["_outer_cut_half"] = {
+			mesh = "moreblocks_slope_outer_cut_half.obj",
+			collision_box = box_slope_outer_half,
+			selection_box = box_slope_outer_half,
+		},
+		["_outer_cut_half_raised"] = {
+			mesh = "moreblocks_slope_outer_cut_half_raised.obj",
+			collision_box = box_slope_outer_half_raised,
+			selection_box = box_slope_outer_half_raised,
+		},
+		["_cut"] = {
+			mesh = "moreblocks_slope_cut.obj",
+			collision_box = box_slope_outer,
+			selection_box = box_slope_outer,
+		},
+	},
+	["stair"] = {
+		[""] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+					{-0.5, 0, 0, 0.5, 0.5, 0.5},
+				},
+			},
+		},
+		["_half"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.5, -0.5, 0, 0, 0.5},
+					{-0.5, 0, 0, 0, 0.5, 0.5},
+				},
+			},
+		},
+		["_right_half" ]= {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{0, -0.5, -0.5, 0.5, 0, 0.5},
+					{0, 0, 0, 0.5, 0.5, 0.5},
+				},
+			},
+		},
+		["_inner"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+					{-0.5, 0, 0, 0.5, 0.5, 0.5},
+					{-0.5, 0, -0.5, 0, 0.5, 0},
+				},
+			},
+		},
+		["_outer"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+					{-0.5, 0, 0, 0, 0.5, 0.5},
+				},
+			},
+		},
+		["_alt"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.5, -0.5, 0.5, 0, 0},
+					{-0.5, 0, 0, 0.5, 0.5, 0.5},
+				},
+			},
+		},
+		["_alt_1"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.0625, -0.5, 0.5, 0, 0},
+					{-0.5, 0.4375, 0, 0.5, 0.5, 0.5},
+				},
+			},
+		},
+		["_alt_2"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.125, -0.5, 0.5, 0, 0},
+					{-0.5, 0.375, 0, 0.5, 0.5, 0.5},
+				},
+			},
+		},
+		["_alt_4"] = {
+			node_box = {
+				type = "fixed",
+				fixed = {
+					{-0.5, -0.25, -0.5, 0.5, 0, 0},
+					{-0.5, 0.25, 0, 0.5, 0.5, 0.5},
+				},
+			},
+		},
+	},
+}
+
+for type,a in pairs(stairsplus.defs) do
+	for name,b in pairs(stairsplus.defs[type]) do
+		table.insert(stairsplus.shapes_list, { type .. "_", name })
+	end
+end
\ No newline at end of file
diff --git a/stairsplus/init.lua b/stairsplus/init.lua
index 5cd415c..cfb6fcd 100644
--- a/stairsplus/init.lua
+++ b/stairsplus/init.lua
@@ -19,21 +19,6 @@ and minetest.settings:get_bool("creative_mode") then
 	stairsplus.expect_infinite_stacks = true
 end
 
-function stairsplus.copytable(orig)
-	local orig_type = type(orig)
-	local copy
-	if orig_type == 'table' then
-		copy = {}
-		for orig_key, orig_value in next, orig, nil do
-			copy[stairsplus.copytable(orig_key)] = stairsplus.copytable(orig_value)
-		end
-		setmetatable(copy, stairsplus.copytable(getmetatable(orig)))
-	else
-		copy = orig
-	end
-	return copy
-end
-
 function stairsplus:prepare_groups(groups)
 	local result = {}
 	if groups then
@@ -85,6 +70,7 @@ end
 
 -- dofile(modpath.. "/aliases.lua") -- Not needed as of Q2 2013, uncomment to fix old maps.
 -- dofile(modpath.. "/conversion.lua") -- Not needed as of Q2 2013, uncomment to fix old maps.
+dofile(modpath .. "/defs.lua")
 dofile(modpath .. "/stairs.lua")
 dofile(modpath .. "/slabs.lua")
 dofile(modpath .. "/slopes.lua")
diff --git a/stairsplus/microblocks.lua b/stairsplus/microblocks.lua
index 50d8487..8a3b63d 100644
--- a/stairsplus/microblocks.lua
+++ b/stairsplus/microblocks.lua
@@ -20,71 +20,22 @@ function register_micro(modname, subname, recipeitem, groups, images, descriptio
 	})
 end
 
-local microblocks_defs = {
-	[""] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, 0, 0.5},
-		},
-	},
-	["_1"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, -0.4375, 0.5},
-		},
-	},
-	["_2"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, -0.375, 0.5},
-		},
-	},
-	["_4"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, -0.25, 0.5},
-		},
-	},
-	["_12"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, 0.25, 0.5},
-		},
-	},
-	["_14"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, 0.375, 0.5},
-		},
-	},
-	["_15"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0, 0.4375, 0.5},
-		},
-	}
-}
-
-for k,v in pairs(microblocks_defs) do
-	table.insert(stairsplus.shapes_list, { "micro_", k })
-end
-
 function stairsplus:register_micro_alias(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(microblocks_defs)
+	local defs = table.copy(stairsplus.defs["micro"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias(modname_old .. ":micro_" .. subname_old .. alternate, modname_new .. ":micro_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_micro_alias_force(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(microblocks_defs)
+	local defs = table.copy(stairsplus.defs["micro"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias_force(modname_old .. ":micro_" .. subname_old .. alternate, modname_new .. ":micro_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_micro(modname, subname, recipeitem, fields)
-	local defs = stairsplus.copytable(microblocks_defs)
+	local defs = table.copy(stairsplus.defs["micro"])
 	local desc = S("%s Microblock"):format(fields.description)
 	for alternate, def in pairs(defs) do
 		for k, v in pairs(fields) do
diff --git a/stairsplus/panels.lua b/stairsplus/panels.lua
index 98e77fd..e065cdd 100644
--- a/stairsplus/panels.lua
+++ b/stairsplus/panels.lua
@@ -20,71 +20,22 @@ function register_panel(modname, subname, recipeitem, groups, images, descriptio
 	})
 end
 
-local panels_defs = {
-	[""] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, 0, 0.5},
-		},
-	},
-	["_1"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, -0.4375, 0.5},
-		},
-	},
-	["_2"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, -0.375, 0.5},
-		},
-	},
-	["_4"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, -0.25, 0.5},
-		},
-	},
-	["_12"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, 0.25, 0.5},
-		},
-	},
-	["_14"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, 0.375, 0.5},
-		},
-	},
-	["_15"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, 0, 0.5, 0.4375, 0.5},
-		},
-	}
-}
-
-for k,v in pairs(panels_defs) do
-	table.insert(stairsplus.shapes_list, { "panel_", k })
-end
-
 function stairsplus:register_panel_alias(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(panels_defs)
+	local defs = table.copy(stairsplus.defs["panel"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias(modname_old .. ":panel_" .. subname_old .. alternate, modname_new .. ":panel_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_panel_alias_force(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(panels_defs)
+	local defs = table.copy(stairsplus.defs["panel"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias_force(modname_old .. ":panel_" .. subname_old .. alternate, modname_new .. ":panel_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_panel(modname, subname, recipeitem, fields)
-	local defs = stairsplus.copytable(panels_defs)
+	local defs = table.copy(stairsplus.defs["panel"])
 	local desc = S("%s Panel"):format(fields.description)
 	for alternate, def in pairs(defs) do
 		for k, v in pairs(fields) do
diff --git a/stairsplus/slabs.lua b/stairsplus/slabs.lua
index de7f031..2d60d6d 100644
--- a/stairsplus/slabs.lua
+++ b/stairsplus/slabs.lua
@@ -20,50 +20,22 @@ function register_slab(modname, subname, recipeitem, groups, images, description
 	})
 end
 
-local slabs_defs = {
-	[""] = 8,
-	["_quarter"] = 4,
-	["_three_quarter"] = 12,
-	["_1"] = 1,
-	["_2"] = 2,
-	["_14"] = 14,
-	["_15"] = 15,
-	["_two_sides"] = {
-						{ -0.5, -0.5, -0.5, 0.5, -7/16, 7/16 },
-						{ -0.5, -0.5, 7/16, 0.5, 0.5, 0.5 }
-					},
-	["_three_sides"] = {
-						{ -7/16, -0.5, -0.5, 0.5, -7/16, 7/16 },
-						{ -7/16, -0.5, 7/16, 0.5, 0.5, 0.5 },
-						{ -0.5, -0.5, -0.5, -7/16, 0.5, 0.5 }
-					},
-	["_three_sides_u"] = {
-						{ -0.5, -0.5, -0.5, 0.5, 0.5, -7/16 },
-						{ -0.5, -0.5, -7/16, 0.5, -7/16, 7/16 },
-						{ -0.5, -0.5, 7/16, 0.5, 0.5, 0.5 }
-					}
-}
-
-for k,v in pairs(slabs_defs) do
-	table.insert(stairsplus.shapes_list, { "slab_", k })
-end
-
 function stairsplus:register_slab_alias(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(slabs_defs)
+	local defs = table.copy(stairsplus.defs["slab"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias(modname_old .. ":slab_" .. subname_old .. alternate, modname_new .. ":slab_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_slab_alias_force(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(slabs_defs)
+	local defs = table.copy(stairsplus.defs["slab"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias_force(modname_old .. ":slab_" .. subname_old .. alternate, modname_new .. ":slab_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_slab(modname, subname, recipeitem, fields)
-	local defs = stairsplus.copytable(slabs_defs)
+	local defs = table.copy(stairsplus.defs["slab"])
 	local desc_base = S("%s Slab"):format(fields.description)
 	for alternate, shape in pairs(defs) do
 		local def = {}
diff --git a/stairsplus/slopes.lua b/stairsplus/slopes.lua
index 7d18b3d..892e856 100644
--- a/stairsplus/slopes.lua
+++ b/stairsplus/slopes.lua
@@ -7,109 +7,6 @@ Licensed under the zlib license. See LICENSE.md for more information.
 
 local S = moreblocks.intllib
 
-local box_slope = {
-	type = "fixed",
-	fixed = {
-		{-0.5,  -0.5,  -0.5, 0.5, -0.25, 0.5},
-		{-0.5, -0.25, -0.25, 0.5,     0, 0.5},
-		{-0.5,     0,     0, 0.5,  0.25, 0.5},
-		{-0.5,  0.25,  0.25, 0.5,   0.5, 0.5}
-	}
-}
-
-local box_slope_half = {
-	type = "fixed",
-	fixed = {
-		{-0.5, -0.5,   -0.5,  0.5, -0.375, 0.5},
-		{-0.5, -0.375, -0.25, 0.5, -0.25,  0.5},
-		{-0.5, -0.25,  0,    0.5, -0.125, 0.5},
-		{-0.5, -0.125, 0.25, 0.5,  0,     0.5},
-	}
-}
-
-local box_slope_half_raised = {
-	type = "fixed",
-	fixed = {
-		{-0.5, -0.5,   -0.5,  0.5, 0.125, 0.5},
-		{-0.5, 0.125, -0.25, 0.5, 0.25,  0.5},
-		{-0.5, 0.25,  0,    0.5, 0.375, 0.5},
-		{-0.5, 0.375, 0.25, 0.5,  0.5,     0.5},
-	}
-}
-
---==============================================================
-
-local box_slope_inner = {
-	type = "fixed",
-	fixed = {
-		{-0.5, -0.5, -0.5, 0.5, -0.25, 0.5},
-		{-0.5, -0.5, -0.25, 0.5, 0, 0.5},
-		{-0.5, -0.5, -0.5, 0.25, 0, 0.5},
-		{-0.5, 0, -0.5, 0, 0.25, 0.5},
-		{-0.5, 0, 0, 0.5, 0.25, 0.5},
-		{-0.5, 0.25, 0.25, 0.5, 0.5, 0.5},
-		{-0.5, 0.25, -0.5, -0.25, 0.5, 0.5},
-	}
-}
-
-local box_slope_inner_half = {
-	type = "fixed",
-	fixed = {
-		{-0.5, -0.5, -0.5, 0.5, -0.375, 0.5},
-		{-0.5, -0.375, -0.25, 0.5, -0.25, 0.5},
-		{-0.5, -0.375, -0.5, 0.25, -0.25, 0.5},
-		{-0.5, -0.25, -0.5, 0, -0.125, 0.5},
-		{-0.5, -0.25, 0, 0.5, -0.125, 0.5},
-		{-0.5, -0.125, 0.25, 0.5, 0, 0.5},
-		{-0.5, -0.125, -0.5, -0.25, 0, 0.5},
-	}
-}
-
-local box_slope_inner_half_raised = {
-	type = "fixed",
-	fixed = {
-		{-0.5, -0.5, -0.5, 0.5, 0.125, 0.5},
-		{-0.5, 0.125, -0.25, 0.5, 0.25, 0.5},
-		{-0.5, 0.125, -0.5, 0.25, 0.25, 0.5},
-		{-0.5, 0.25, -0.5, 0, 0.375, 0.5},
-		{-0.5, 0.25, 0, 0.5, 0.375, 0.5},
-		{-0.5, 0.375, 0.25, 0.5, 0.5, 0.5},
-		{-0.5, 0.375, -0.5, -0.25, 0.5, 0.5},
-	}
-}
-
---==============================================================
-
-local box_slope_outer = {
-	type = "fixed",
-	fixed = {
-		{-0.5,  -0.5,  -0.5,   0.5, -0.25, 0.5},
-		{-0.5, -0.25, -0.25,  0.25,     0, 0.5},
-		{-0.5,     0,     0,     0,  0.25, 0.5},
-		{-0.5,  0.25,  0.25, -0.25,   0.5, 0.5}
-	}
-}
-
-local box_slope_outer_half = {
-	type = "fixed",
-	fixed = {
-		{-0.5,  -0.5,  -0.5,   0.5, -0.375, 0.5},
-		{-0.5, -0.375, -0.25,  0.25, -0.25, 0.5},
-		{-0.5,  -0.25,     0,     0, -0.125, 0.5},
-		{-0.5,  -0.125,  0.25, -0.25, 0, 0.5}
-	}
-}
-
-local box_slope_outer_half_raised = {
-	type = "fixed",
-	fixed = {
-		{-0.5,  -0.5,  -0.5,   0.5, 0.125, 0.5},
-		{-0.5, 0.125, -0.25,  0.25, 0.25, 0.5},
-		{-0.5,  0.25,     0,     0, 0.375, 0.5},
-		{-0.5,  0.375,  0.25, -0.25, 0.5, 0.5}
-	}
-}
-
 -- Node will be called <modname>:slope_<subname>
 
 function register_slope(modname, subname, recipeitem, groups, images, description, drop, light)
@@ -123,122 +20,22 @@ function register_slope(modname, subname, recipeitem, groups, images, descriptio
 	})
 end
 
-local slopes_defs = {
-	[""] = {
-		mesh = "moreblocks_slope.obj",
-		collision_box = box_slope,
-		selection_box = box_slope,
-
-	},
-	["_half"] = {
-		mesh = "moreblocks_slope_half.obj",
-		collision_box = box_slope_half,
-		selection_box = box_slope_half,
-	},
-	["_half_raised"] = {
-		mesh = "moreblocks_slope_half_raised.obj",
-		collision_box = box_slope_half_raised,
-		selection_box = box_slope_half_raised,
-	},
-
-	--==============================================================
-
-	["_inner"] = {
-		mesh = "moreblocks_slope_inner.obj",
-		collision_box = box_slope_inner,
-		selection_box = box_slope_inner,
-	},
-	["_inner_half"] = {
-		mesh = "moreblocks_slope_inner_half.obj",
-		collision_box = box_slope_inner_half,
-		selection_box = box_slope_inner_half,
-	},
-	["_inner_half_raised"] = {
-		mesh = "moreblocks_slope_inner_half_raised.obj",
-		collision_box = box_slope_inner_half_raised,
-		selection_box = box_slope_inner_half_raised,
-	},
-
-	--==============================================================
-
-	["_inner_cut"] = {
-		mesh = "moreblocks_slope_inner_cut.obj",
-		collision_box = box_slope_inner,
-		selection_box = box_slope_inner,
-	},
-	["_inner_cut_half"] = {
-		mesh = "moreblocks_slope_inner_cut_half.obj",
-		collision_box = box_slope_inner_half,
-		selection_box = box_slope_inner_half,
-	},
-	["_inner_cut_half_raised"] = {
-		mesh = "moreblocks_slope_inner_cut_half_raised.obj",
-		collision_box = box_slope_inner_half_raised,
-		selection_box = box_slope_inner_half_raised,
-	},
-
-	--==============================================================
-
-	["_outer"] = {
-		mesh = "moreblocks_slope_outer.obj",
-		collision_box = box_slope_outer,
-		selection_box = box_slope_outer,
-	},
-	["_outer_half"] = {
-		mesh = "moreblocks_slope_outer_half.obj",
-		collision_box = box_slope_outer_half,
-		selection_box = box_slope_outer_half,
-	},
-	["_outer_half_raised"] = {
-		mesh = "moreblocks_slope_outer_half_raised.obj",
-		collision_box = box_slope_outer_half_raised,
-		selection_box = box_slope_outer_half_raised,
-	},
-
-	--==============================================================
-
-	["_outer_cut"] = {
-		mesh = "moreblocks_slope_outer_cut.obj",
-		collision_box = box_slope_outer,
-		selection_box = box_slope_outer,
-	},
-	["_outer_cut_half"] = {
-		mesh = "moreblocks_slope_outer_cut_half.obj",
-		collision_box = box_slope_outer_half,
-		selection_box = box_slope_outer_half,
-	},
-	["_outer_cut_half_raised"] = {
-		mesh = "moreblocks_slope_outer_cut_half_raised.obj",
-		collision_box = box_slope_outer_half_raised,
-		selection_box = box_slope_outer_half_raised,
-	},
-	["_cut"] = {
-		mesh = "moreblocks_slope_cut.obj",
-		collision_box = box_slope_outer,
-		selection_box = box_slope_outer,
-	},
-}
-
-for k,v in pairs(slopes_defs) do
-	table.insert(stairsplus.shapes_list, { "slope_", k })
-end
-
 function stairsplus:register_slope_alias(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(slopes_defs)
+	local defs = table.copy(stairsplus.defs["slope"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias(modname_old .. ":slope_" .. subname_old .. alternate, modname_new .. ":slope_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_slope_alias_force(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(slopes_defs)
+	local defs = table.copy(stairsplus.defs["slope"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias_force(modname_old .. ":slope_" .. subname_old .. alternate, modname_new .. ":slope_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_slope(modname, subname, recipeitem, fields)
-	local defs = stairsplus.copytable(slopes_defs)
+	local defs = table.copy(stairsplus.defs["slope"])
 	local desc = S("%s Slope"):format(fields.description)
 	for alternate, def in pairs(defs) do
 		for k, v in pairs(fields) do
diff --git a/stairsplus/stairs.lua b/stairsplus/stairs.lua
index 815f7ac..eb76663 100644
--- a/stairsplus/stairs.lua
+++ b/stairsplus/stairs.lua
@@ -20,111 +20,22 @@ function register_stair(modname, subname, recipeitem, groups, images, descriptio
 	})
 end
 
-local stairs_defs = {
-	[""] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
-				{-0.5, 0, 0, 0.5, 0.5, 0.5},
-			},
-		},
-	},
-	["_half"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.5, -0.5, 0, 0, 0.5},
-				{-0.5, 0, 0, 0, 0.5, 0.5},
-			},
-		},
-	},
-	["_right_half" ]= {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{0, -0.5, -0.5, 0.5, 0, 0.5},
-				{0, 0, 0, 0.5, 0.5, 0.5},
-			},
-		},
-	},
-	["_inner"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
-				{-0.5, 0, 0, 0.5, 0.5, 0.5},
-				{-0.5, 0, -0.5, 0, 0.5, 0},
-			},
-		},
-	},
-	["_outer"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.5, -0.5, 0.5, 0, 0.5},
-				{-0.5, 0, 0, 0, 0.5, 0.5},
-			},
-		},
-	},
-	["_alt"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.5, -0.5, 0.5, 0, 0},
-				{-0.5, 0, 0, 0.5, 0.5, 0.5},
-			},
-		},
-	},
-	["_alt_1"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.0625, -0.5, 0.5, 0, 0},
-				{-0.5, 0.4375, 0, 0.5, 0.5, 0.5},
-			},
-		},
-	},
-	["_alt_2"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.125, -0.5, 0.5, 0, 0},
-				{-0.5, 0.375, 0, 0.5, 0.5, 0.5},
-			},
-		},
-	},
-	["_alt_4"] = {
-		node_box = {
-			type = "fixed",
-			fixed = {
-				{-0.5, -0.25, -0.5, 0.5, 0, 0},
-				{-0.5, 0.25, 0, 0.5, 0.5, 0.5},
-			},
-		},
-	},
-}
-
-for k,v in pairs(stairs_defs) do
-	table.insert(stairsplus.shapes_list, { "stair_", k })
-end
-
 function stairsplus:register_stair_alias(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(stairs_defs)
+	local defs = table.copy(stairsplus.defs["stair"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias(modname_old .. ":stair_" .. subname_old .. alternate, modname_new .. ":stair_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_stair_alias_force(modname_old, subname_old, modname_new, subname_new)
-	local defs = stairsplus.copytable(stairs_defs)
+	local defs = table.copy(stairsplus.defs["stair"])
 	for alternate, def in pairs(defs) do
 		minetest.register_alias_force(modname_old .. ":stair_" .. subname_old .. alternate, modname_new .. ":stair_" .. subname_new .. alternate)
 	end
 end
 
 function stairsplus:register_stair(modname, subname, recipeitem, fields)
-	local defs = stairsplus.copytable(stairs_defs)
+	local defs = table.copy(stairsplus.defs["stair"])
 	local desc = S("%s Stairs"):format(fields.description)
 	for alternate, def in pairs(defs) do
 		for k, v in pairs(fields) do