|This article is about the current version of DF.|
The lifeblood of a fortress, a smelter is used to smelt ores and melt existing metal objects into metal bars. The smelter is also where lignite and bituminous coal are processed into coke. A dwarf must have the "Furnace Operator" labor enabled to use the smelter, and all smelter tasks require a bar of fuel.
If all options in a smelter are red, there are three possible scenarios to explain why:
- No fuel - find/buy coke or turn wood into charcoal at a wood furnace.
- The workshop is being specified as a "Give" destination from a stockpile that does not possess all of the necessary materials (including fuel).
- The smelter is located inside a burrow, one of the necessary materials (including fuel) is not available in the burrow, and that burrow has the "Limit workshops to burrow" option enabled.