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Turns ore and coal into metal bars.
Source: Crafting
Sell Price: Cannot be sold

Recipe Source: Clint in cutscene after collecting 1+ Copper Ore
Ingredients: Stone (25) Copper Ore (20)

The Furnace smelts Ore into Bars, to be used in several Crafting recipes. Clint gives you the blueprint for the Furnace in a cutscene the morning after you collect at least 1 Copper Ore. Copper ore obtained from geodes, fishing treasure, or purchased from Clint may activate the cutscene, but must be picked up as a single item from the ground to count. You can purchase a single copper ore from Clint on day 1, drop it on the ground, pick it up, and the cutscene will activate the next morning. You must exit your house between 6am and 11:30am to trigger the cutscene.

If you have not yet met Clint when he comes to give you the blueprint, the meeting will count as an introduction.

A furnace is the reward for completing the Blacksmith's Bundle in the Boiler Room.

The furnace will occasionally make the sound that is when you place down wallpaper or flooring


To smelt any ore, equip it and activate the furnace while there is Coal in your inventory. One unit of Coal is required for each smelting operation, regardless of the material or duration.

Input Output Time to smelt
Copper Ore (5) Copper Bar (1) 0.5 hours
Quartz (1) Refined Quartz (1) 1.5 hours
Iron Ore (5) Iron Bar (1) 2 hours
Gold Ore (5) Gold Bar (1) 5 hours
Iridium Ore (5) Iridium Bar (1) 8 hours