diff --git a/technic/machines/register/alloy_furnace.lua b/technic/machines/register/alloy_furnace.lua
index b771134..bbae151 100644
--- a/technic/machines/register/alloy_furnace.lua
+++ b/technic/machines/register/alloy_furnace.lua
@@ -240,7 +240,8 @@ function technic.register_alloy_furnace(data)
 				srcstack = src2stack
 				src2stack = temp
 			end
-			if not result then
+			if not result or
+			   not inv:room_for_item("dst", result) then
 				hacky_swap_node(pos, machine_node)
 				meta:set_string("infotext", machine_name.." Idle")
 				meta:set_int(data.tier.."_EU_demand", 0)
@@ -251,7 +252,6 @@ function technic.register_alloy_furnace(data)
 				-- Unpowered - go idle
 				hacky_swap_node(pos, machine_node)
 				meta:set_string("infotext", machine_name.." Unpowered")
-				next_state = 1
 			elseif eu_input >= machine_demand[EU_upgrade+1] then
 				-- Powered
 				hacky_swap_node(pos, machine_node.."_active")
diff --git a/technic/machines/register/common.lua b/technic/machines/register/common.lua
index 475e35b..664f43b 100644
--- a/technic/machines/register/common.lua
+++ b/technic/machines/register/common.lua
@@ -70,7 +70,7 @@ function technic.smelt_item(meta, result, speed)
 	if result and result.item then
 		meta:set_int("cook_time", 0)
 		-- check if there's room for output in "dst" list
-		if inv:room_for_item("dst", result) then
+		if inv:room_for_item("dst", result.item) then
 			srcstack = inv:get_stack("src", 1)
 			srcstack:take_item()
 			inv:set_stack("src", 1, srcstack)
diff --git a/technic/machines/register/electric_furnace.lua b/technic/machines/register/electric_furnace.lua
index 2a7642f..7d57a59 100644
--- a/technic/machines/register/electric_furnace.lua
+++ b/technic/machines/register/electric_furnace.lua
@@ -152,12 +152,6 @@ function technic.register_electric_furnace(data)
 			local machine_node   = "technic:"..string.lower(data.tier).."_electric_furnace"
 			local machine_demand = data.demand
 
-			-- Setup meta data if it does not exist. state is used as an indicator of this
-			if not eu_input then
-				meta:set_int(data.tier.."_EU_demand", machine_demand[1])
-				meta:set_int(data.tier.."_EU_input", 0)
-			end
-
 			-- Power off automatically if no longer connected to a switching station
 			technic.switching_station_timeout_count(pos, data.tier)
 
@@ -174,7 +168,8 @@ function technic.register_electric_furnace(data)
 					method = "cooking",
 					width = 1,
 					items = inv:get_list("src")})
-			if not result or result.time == 0 then
+			if not result or result.time == 0 or
+			   not inv:room_for_item("dst", result.item) then
 				meta:set_int(data.tier.."_EU_demand", 0)
 				hacky_swap_node(pos, machine_node)
 				meta:set_string("infotext", machine_name.." Idle")