The '''Heavy Furnace''' is an improved version of the [[furnace]]. It takes 25 ores (or 5 quartz) and 3 [[Coal]] to run it.
The '''Heavy Furnace''' is an improved version of the [[furnace]]. It takes 25 ores (or 5 quartz) and 3 [[Coal]] to run it.
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==Smelting==
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To smelt any ore, equip it and activate the furnace while there is [[Coal]] in inventory. Three units of [[Coal]] are required for each smelting operation, regardless of the material or duration.