A Copper Bar is created by smelting 5 Copper Ore in a furnace with 1 coal for fuel. Smelting the copper in a furnace takes 30 ingame minutes. Shadow Brutes and Shadow Shaman may also drop a Copper Bar when slain (4% chance).. Copper bars are used in a variety of crafting recipes and are used to upgrade can be sold for 60g.
Copper Bar Stardew Valley Wiki
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