Furnace
A Furnace. Use it to smelt mined ore.
The Furnace is a fuel-burning station in Rust with 500 health. It burns Wood, with 2 input and 3 output slots. You can craft it without a workbench, and its blueprint costs 10 scrap to research.
About the Furnace
Outside a tool cupboard's range it holds for 2 days, then decays from full health to nothing in 4 days.
How to raid the Furnace
Its cheapest raid is 2 × Satchel Charge, 960 sulfur in all. Each of these also brings it down from full health: 1 × Timed Explosive Charge and 2 × Rocket. That count assumes no duds, and a Satchel Charge fails to go off 20% of the time.
How to craft the Furnace
Crafting one takes 15 seconds without a workbench and costs 200 × Stones, 100 × Wood and 50 × Low Grade Fuel.
200
100
50 How to get the Furnace blueprint
Research it for 10 scrap at a Research Table.
1 Item
10 Scrap
Blueprint
10 Repair when placed
A damaged Furnace can be repaired where it stands with a hammer. Repairing it from nothing to full costs:
×100
×50
×25 How to repair the Furnace
A full repair at a Repair Bench costs 41 × Stones, 21 × Wood and 11 × Low Grade Fuel, and you need its blueprint.
×41
×21
×11 Reduction is how much of that damage type never lands. Damage taken is the rest: at 50% reduction a hit for 100 does 50. A negative reduction means the hit lands harder than it would bare.
What the Furnace recycles into
A green recycler always gives back 100 × Stones, 50 × Wood and 25 × Low Grade Fuel for one.
×100
×50
×25
×120
×60
×30
×150
×75
×37
50%
×80
×40
×20
Timed Explosive Charge ×1550—
2,200
3,000
200
60
5
2
Rocket ×2312.5—
2,800
3,900
200
60
80
8
Satchel Charge ×227520%
960
1,440
160
20
2
40mm HE Grenade ×862.5——
Beancan Grenade ×86515%
960
1,440
160
High Velocity Rocket ×1245—
2,400
3,600
240
24
Survey Charge ×3614—
2,160
3,240
360
720
180
Explosive 5.56 Rifle Ammo ×3913—
975
1,170
195
Homing Missile ×4212—
4,200
6,300
21
840
84 From full health (500 HP), each one placed on it: damage per hit is after its protection. Duds are throws that fizzle and need another throw, not counted in Needed. Costs are for the whole count, crafted from raw materials.
Stats checked against the Rust game files on 13 November 2026.