Furnace

The Furnace is a crafting and processing item used to smelt metal ores into bars. It is primarily used for turning Tin Ore, Copper Ore, and Iron Ore into their corresponding metal bars, making it an important part of early- and mid-game progression when upgrading tools and crafting more advanced goods.

A Furnace can be purchased from John’s Goods, and it can also appear as possible loot from the Gacha Machine. Once obtained, it serves as a dedicated smelting station rather than a decorative object, so keeping one close to your storage or mining area is convenient when you are regularly bringing back ore.

Its main function is straightforward: place ore into the Furnace and collect the resulting bar after processing. This makes it the standard way to convert raw mined materials into usable metal resources for crafting. Because it works with several common ore types, it is useful to keep active whenever you are stockpiling Tin, Copper, or Iron.

• Used to smelt Tin Ore, Copper Ore, and Iron Ore into bars.
• Can be bought from John’s Goods.
• Can also be obtained from the Gacha Machine.
• Best kept near ore storage or crafting areas for easy processing.

The Furnace’s processing behavior is listed with multiple input and output cases, but the most important practical use is that it handles ore-to-bar conversion efficiently for the three basic metals. If you are mining regularly, having a Furnace available helps turn raw materials into crafting components without needing to hold onto unprocessed ore for long.