Furnace

2016-04-21T16:04:41Z

Lenherr:

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[[File:factorio-beacon.png|thumb|384px|12 [[Electric furnace]]s affected by a single [[Basic beacon]] (this number can't be improved as of 7.1).]]

Furnaces are used to smelt [[items#resources|resources]] into usable [[items#Intermediate products|products]] for further usage. This makes them a key building for development and automation. Starting with very basic [[Stone_furnace|stone furnaces]] the player can advance through [[research]] and replace them with more efficient and faster furnaces later in the game.

Furnaces are affected by [[Beacon]]s.

== Beginner ==
=== Types ===
[[File:furnace-example-1.png|thumb|384px|An advanced smelter in late gameplay. Furnaces energy consumption reduced to minimum of 20% with 2 [[module|Effictivity modules]] consuming only 36 kW each.]]
{| class="wikitable"
! Type !! Total raw !! Crafting Speed !! Maximum energy !! Module slots !! Size !! Pollution
|-
| {{imagelink|stone-furnace|stone_furnace|Stone Furnace}} || {{icon|stone|5|stone}} || 1 || 180 kW ([[fuel|burner]]) || 0 || 2 x 2 || 1.8
|-
| {{imagelink|steel-furnace|steel_furnace|Steel Furnace}} || {{icon|steel-plate|8|Steel plate}} {{icon|stone-brick|10|stone_brick}} || 2 || 180 kW ([[fuel|burner]]) || 0 || 2 x 2 || 3.6
|-
| {{imagelink|electric-furnace|electric_furnace|Electric Furnace}} || {{icon|copper-plate|25|copper_plate}} {{icon|iron-plate|10|iron_plate}} {{icon|steel-plate|15|Steel plate}} {{icon|plastic-bar|10|Plastic bar}} {{icon|stone-brick|10|stone_brick}} || 2 || 180 kW ([[Electric_network|electric]]) || 2 || 3 x 3 || 0.9
|-
|}

For details on Crafting Speed see: https://forums.factorio.com/viewtopic.php?f=18&t=8370

=== Recipes ===
{| class="wikitable"
! Input !! Output !! Work consumed [[Stone furnace]] !! Time [[Stone furnace]]
|-
| {{icon|iron-ore|1|Iron ore}} || {{icon|iron-plate|1|Iron plate}} || 0.63 MJ || 3.5 s
|-
| {{icon|copper-ore|1|Copper ore}} || {{icon|copper-plate|1|Copper plate}} || 0.63 MJ || 3.5 s
|-
| {{icon|stone|2|Stone}} || {{icon|stone-brick|1|Stone brick}} || 0.63 MJ || 3.5 s
|-
| {{icon|iron-plate|5|Iron Plate}} || {{icon|steel-plate|1|Steel plate}} || 3.15 MJ || 17.5 s
|-
|}

For details see [[Units#Power]].

== Advanced ==
=== Multitask furnaces ===
The furnace chooses the used recipe by itself (it uses the recipe with the right input item). This behavior can be used to furnace, depending on what is currently needed/coming in.

See http://www.factorioforums.com/forum/viewtopic.php?f=5&t=5930&start=10#p47008 and ff.

Note, that this strategy is quite advanced, cause the inserters will fill normally the furnace up to 5 items, so especially when the output is blocked (cause too much produced) you cannot input (the more needed) item.

== Expert ==
===Relationship to [[Assembling machine]]===
Since v0.11 the furnaces are technically (c++ code) the same class. This means for example for modding, that a furnace should be able to use two input items.

==See also==
* [http://www.factorioforums.com/forum/viewtopic.php?f=8&t=6802 Smelting where you mine]
* [http://www.factorioforums.com/forum/viewtopic.php?f=5&t=6657 Burner or Electric?]

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Furnace