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Information accurate as of: build 25211

This article has a Legacy counterpart. Click here to go to the article.


The Furnace is a craftable item that can be used to smelt metals.

Usage Edit

The Furnace can be used after it has been crafted and placed. To place the Furnace you must first craft it and move it to your Hotbar, from here you can move it around until the "Ghost Furnace" has turned Blue (Indicating it can be placed) Once the Furnace has been placed it can be operated by a player (Any number of players can operate it at the same time) and shows an empty 1x6 grid.

To use the Furnace a player must place Wood in it and ignite it.The furnace will burn up to two Wood and create the smelted version of the materials every 30 seconds. Players do not have to be near the Furnace for it to operate, and it will keep burning until it is turned off, runs out of fuel or if any item slot is filled and it cant find space for either the smelted material or charcoal. A byproduct of the process is Charcoal, which you need to make Gunpowder. Furnaces will smelt all slots simultaneously, so it is more efficient to smelt multiple stacks of the same ore at one time.

Crafting Edit

The Furnace can be crafted with:

  • 50 low grade fuel
  • 100 wood
  • 200 stones

Repairing Edit

The Furnace can be repaired with a Hammer:

  • 27 low grade fuel
  • 50 wood
  • 98 stones

The Furnace can be repaired with a Repair Bench:

  • 25 low grade fuel
  • 50 wood
  • 100 stones

Max Condition Loss = 20%

Smelting Rates Edit

In Rust the conversion rates are usually 1:1.

Wood Burns at a rate of 30 wood per minute, or one wood every 2 seconds.

Unrefined Resource Smelts Into Unit Fuel Cost Yield per Minute Ore-Product Ratio
Metal Ore Metal Fragments 5 Wood 6 Metal Fragments 1:1
Sulfur Ore Sulfur 2.5 Wood 12 Sulfur 1:1
Wood Charcoal 1.33 Wood 22.5 Charcoal 4:3
High Quality Metal Ore High Quality Metal 10 Wood 3 High Quality Metal 1:1

Efficient Smelting Edit

Metal Fragments Edit

600 Metal Ore w/1k Wood
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Charcoal iconTransparent item
x750
Metal Fragments iconTransparent item
x600
Wood iconTransparent item
x1000

Time to smelt: 33m20s

Result =

Charcoal iconTransparent item
x750
Metal Fragments iconTransparent item
x600


High Quality Metal Edit

300 High Quality Metal Ore w/1k Wood
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x100
Charcoal iconTransparent item
x721
High Quality Metal iconTransparent item
x300

Time to smelt: 33m20s

Result =

Charcoal iconTransparent item
x721
High Quality Metal iconTransparent item
x300


Sulphur Edit

1000 Sulfur Ore
Wood iconTransparent item
x835
Sulfur Ore iconTransparent item
x334
Sulfur Ore iconTransparent item
x333
Sulfur Ore iconTransparent item
x333
Charcoal iconTransparent item
x626
Sulfur iconTransparent item
x1000

Time to smelt: 27m50s

Result =

Charcoal iconTransparent item
x626
Sulfur iconTransparent item
x1000

Trivia Edit

  • Food can be cooked in a furnace on some modded servers.
  • The furnace is destructable and takes approximately 20 hits with a hatchet to break.
  • The furnace is a scaled-down version of the Large Furnace.
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