Industrial Blast Furnace (GregTech 4)

The Industrial Blast Furnace is a multiblock structure from GregTech. It is capable of smelting numerous different materials. The multiblock structure requires 34 Machine Casing blocks in a 3x3x4, with a hole in the middle. Putting lava in the center 1x2 will add 500 heat capacity. Different Machine Casings will yield higher heat capacity, allowing for higher tier materials to be smelted. A Standard Machine Casing will add 30 heat capacity per block, a Reinforced Machine Casing will add 50 heat capacity per block, and an Advanced Machine Casing will add 100 heat capacity per block, making the maximum heat capacity 3,900K. Even though this is the maximum heat capacity available, it is not recommended as the most you will need is 2,500K for Tungsten. An entire Industrial Blast Furnace has room for 4 Industrial Blast Furnace Controller boxes (the block crafted below). To stay usable, each controller box needs 128EU/t.

Usage
Build a 3x3x4 box out of Machine Casings. Place the controller box on the bottom-middle of any/all sides. Power it. You can tell if it is working because the block will change color (red = insufficient energy or insufficient multiblock structure, while green = working properly and ready to smelt). There are two input slots in the GUI. For some items the second input works as a modifier, for other items it simply works as a second input. The only items that can be modified are Iron Ore (add a Calcium Carbonate Cell to make 3x Refined Iron, Pyrite Ore (add a Calcium Carbonate Cell to make 2x Refined Iron, and Iron Dust (add 2x Coal Dust to make 1x Steel).