Blast Furnace (Railcraft)

The Blast Furnace is a multiblock structure added by Railcraft. This structure is used to turn Iron into Steel. The Blast Furnace will only take Coal Coke, Charcoal, Coal, and Alumentum as fuels, requiring 1 Coal Coke per ingot, 0.5 Alumentum per ingot, 2 Coal per ingot, or 4 Charcoal per ingot.

Construction
To build the structure, 34 Blast Furnace Bricks are required. It is built by placing the bricks in a 3x3x4 with a hollow middle. Once assembled correctly the Blast Furnace will have a window on the bottom-middle of each side. When it is active, it will contain lava in the middle; breaking it at this time will spill the lava out.

Blast Furnaces cannot be built directly adjacent to one another; there must be a gap between them, or other non-Blast Furnace Brick blocks. It can be built directly adjacent to other multiblock structures, such as the Coke Oven.