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The Large Furnace has 1,500 health and smelts Sulfur Ore five times faster than the Furnace.
What one batch takes.
Stones
Wood
Low Grade Fuel
The same recipe expanded until every line is something you gather, smelt or loot.
Wood
Stones
Animal Fat
Cloth
Stones
Wood
Low Grade Fuel
Copy it, then hold Shift and click Paste (JSON) in the conveyor, in game.
[
{
"TargetCategory": null,
"MaxAmountInOutput": 500,
"BufferAmount": 0,
"MinAmountInInput": 0,
"IsBlueprint": false,
"TargetItemName": "stones"
},
{
"TargetCategory": null,
"MaxAmountInOutput": 600,
"BufferAmount": 0,
"MinAmountInInput": 0,
"IsBlueprint": false,
"TargetItemName": "wood"
},
{
"TargetCategory": null,
"MaxAmountInOutput": 75,
"BufferAmount": 0,
"MinAmountInInput": 0,
"IsBlueprint": false,
"TargetItemName": "lowgradefuel"
}
]
Workbench Level 2, 25s, yields 1
Faster at a higher workbench: 12.5s at Workbench Level 3.
Researching the blueprint costs 60 scrap at a Research Table.
Crates, barrels and NPCs that drop the Large Furnace, most likely first
| From | Chance | Amount |
|---|---|---|
 Locked Crate | 1.3% | 1 to 2 |
 Elite Crate | 0.78% | 1 to 3 |
| Scientist PT Boat Dry Box | 0.73% | 1 to 3 |
 Military Crate | 0.42% | 1 |
 Underwater Lab Military Crate | 0.42% | 1 |
 Wagon Military Crate | 0.42% | 1 |
Missile Silo Scientist (underground) | 0.3% | 1 |
Scientist | 0.074% | 1 |
Heavy Scientist | 0.061% | 1 |
 Treasure Box, mission reward | 1.6% | 1 to 2 |
 Gingerbread Mine Present, Christmas event only | 0.42% | 1 |
Chance is for one container opened or one NPC killed. Amount is how many it holds when it holds any.
Stones,
Wood,
Low Grade FuelEach swing charges the share of the cost for 50 health, rounded up to whole resources, and restores as much health as it paid for, which can be more than 50. Nothing can be repaired for 30 seconds after it takes damage.
What the Large Furnace gives back in each recycler
| Recycler | Efficiency | You get |
|---|---|---|
| Red recycler | 75% | 56 + 25% Low Grade Fuel, 375 Stones, 450 Wood |
| Green recycler (powered) | 60% | 45 Low Grade Fuel, 300 Stones, 360 Wood |
| Green recycler | 50% | 37 + 50% Low Grade Fuel, 250 Stones, 300 Wood |
| Yellow recycler | 40% | 30 Low Grade Fuel, 200 Stones, 240 Wood |
The Large Furnace breaks down into Low Grade Fuel, Stones and Wood.
A recycler takes one at a time.
Figures are for one item in perfect condition. Each recycler’s name opens its full table at this item. “56 + 25%” means 56 every time and a 25% chance of one more.
In Rust, Large Furnace is a deployable in the Deployables category (item ID #-1992717673, console shortname furnace.large). In active play, it follows standard server rules for deployable gear across procedural maps. Inventory storage holds a single unit per slot, and uncollected ground drops despawn after 40 minutes.
Used to smelt large quantities of ore. Difficult to secure, must be placed on terrain.
Crafting Large Furnace in Rust takes 25 seconds at a Workbench Level 2 once the 60 scrap blueprint node is unlocked, with all ballistics, crafting, and durability values read from the Rust game files. Shredding a spare copy at a green recycler recovers base materials at fifty percent yield (vs forty percent at safe-zone yellow units). Placed structures heal with a Hammer using raw materials from your inventory.
Only two of the 181 deployables have more health than the Large Furnace.
The Large Furnace has 1,500 health, as does the Small Oil Refinery.
When choosing between Large Furnace and related deployables in Rust, prioritize researching a looted or traded copy at a Research Table (60 scrap) whenever you want to skip the 390-scrap tech tree path and save 330 scrap, or unlock the tech tree branch when your group also needs the prerequisite blueprints.
| Item | Category | Stack Limit | Craft / Source | Tech Tree / Research | Green Recycler Yield |
|---|---|---|---|---|---|
| Large Furnace | Deployables | 1 per slot | Workbench Level 2 | 60 node / 390 path | Not recyclable |
| Furnace | Deployables | 1 per slot | Crafted by hand | 10 scrap (Table) | Not recyclable |
| Cooking Workbench | Deployables | 1 per slot | Workbench Level 2 | 30 node / 420 path | Not recyclable |
| Graveyard Fence | Construction | 10 per slot | Crafted by hand | No blueprint | Not recyclable |
Compare Large Furnace with closely related deployable sheets in the Rust item catalog:
To compare Large Furnace against every item in its inventory category, browse All 168 items in Deployables, or plan prerequisite scrap paths on the The Workbench Level 2 tech tree, tile by tile.
The Large Furnace has 1,500 health once placed in Rust. It belongs to the Deployables category under numeric ID -1992717673 across 168 deployables, while F1 console command inventory.giveid -1992717673 1 spawns 1 unit for testing across 168 published Deployables entries (158 with crafting blueprints).
The Large Furnace is crafted at a Workbench Level 2 from 500 Stones, 600 Wood and 75 Low Grade Fuel, once the blueprint is learned in Rust. Smelting raw ores and looting required components from monument crates lets players queue the craft at their workbench.
The Large Furnace burns one Wood every 2 seconds, about 1,800 an hour in Rust. It is indexed under the Deployables category alongside 167 other deployables in Rust (item ID -1992717673), stacking to 1 unit per slot, with F1 console command inventory.giveid -1992717673 1.
The Large Furnace drops from 9 container and NPC loot tables in Rust, led by Locked Crate (1.3% chance), Elite Crate (0.78% chance), and Scientist PT Boat Dry Box (0.73% chance). Each listed probability reflects a single container opened or NPC killed, and found copies can be repaired or researched at base.
The Large Furnace recycles in Rust at an unpowered green recycler into 37 Low Grade Fuel plus a 50% chance of one more, 250 Stones and 300 Wood. Undamaged copies return the full listed yield, whereas worn items scale their recycler output down in proportion to remaining durability.
The Large Furnace repairs in Rust once placed with a Hammer for up to 245 Stones, 288 Wood and 55 Low Grade Fuel at full wear (28 swings). Hammering a placed structure restores health with no maximum-durability loss after a 30-second combat cooldown.
Blueprint progression for Large Furnace at Workbench Level 2 in Rust charges 60 scrap on the target node and 390 cumulative scrap along the prerequisite branch, while direct blueprint study at a Research Table charges 60 scrap.
Dropped on the ground in Rust, the Large Furnace despawns after 40 minutes by default. Picking it back up into a player inventory or storing it inside a base container immediately resets that ground despawn timer, which the server scales by item rarity tier.
The Large Furnace has 32-bit signed item ID -1992717673 and shortname furnace.large in Rust. Server plugins, custom loot tables, Vending Machine listings, and automated Industrial Conveyor filter strings reference these two identifiers under the Deployables category (stack limit 1 unit per slot).
Server administrators in Rust spawn the Large Furnace in the F1 developer console by typing inventory.give furnace.large 1 or inventory.giveid -1992717673 1 for a single unit. Both console spawn commands require administrator or moderator privileges on the server, while regular players can bind a quick-craft shortcut key instead.