The blast furnace is used for many things. It will also double anything smelted/cooked by it.

Construction Edit

The blast furnace uses up a fair amount of space and requires:

10 Obsidian

10 Steel Ingots (which is 10 Iron Ore and 20 Coal)

10 Gunpowder

30 Coal

BEWARE! - Blast furnaces count as wooden buildings, and therefore can be burnt/bombed! Keep your blast furnace well protected! Edit