Blast furnaces are similar to furnaces, but can only raw , blocks and / made of , or . Blast furnaces serve as the counterpart to , which are used mainly to cook food faster. Smelting equipment yields one iron or gold nugget from their respective materials. Once an and a are placed into the blast furnace, the block state changes to lit and the item is smelted twice as fast as a regular furnace. Fuel is also used at double the rate of regular furnaces, so the number of items smelted per fuel stays the same. The product can then be collected by using the output. Like normal , a can be used to feed items into a blast furnace and can also pick up items from it., A blast furnace is a block that smelts ores, raw metals and metal armor and tools twice as quickly as a furnace but cannot smelt anything else. It also serves as an armorer's job site block. A blast furnace can be picked up using any pickaxe., To make a blast furnace, place 5 iron ingot, 1 furnace and 3 smooth stone in the 3x3 crafting grid. When making a blast furnace, it is important that the iron ingot, furnace and smooth stone are placed in the exact pattern as the image below. In the first row, there should be 3 iron ingot..