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Information accurate as of: 904.83 Update


The Large Furnace is for players who want to smelt large amounts of ore at a time and spend less Low Grade Fuel making the furnace, and less wood in the operating costs. This variation of the Furnace is much more efficient, and has a whopping 18 slots! It is still very costly, but if you have the resources, consider investing in this production machine. However, there is one downfall to the Large Furnace: it must be placed on open terrain. It cannot be placed in the build zones down in caves or on a foundation, although it is possible to surround it with walls right next to it, unlike a Mining Quarry.

Use[]

The Large Furnace is used just like its normal sized counterpart. Simply put in a fuel source, some ore, and turn it on. The Large Furnace will then burn until it is turned off, or it runs out of fuel. To smelt ores faster, split them up and distribute them evenly across multiple slots. Just be sure to leave three slots open: one for the fuel source, one for the refined product, and one for the charcoal!

Efficient Smelting[]

High Quality Metal[]

High Quality Metal w/1k Wood (Charcoal Saved)
Wood iconTransparent item
x1000
High Quality Metal Ore iconTransparent item
x6
High Quality Metal Ore iconTransparent item
x29
High Quality Metal Ore iconTransparent item
x60
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x13
High Quality Metal Ore iconTransparent item
x39
High Quality Metal Ore iconTransparent item
x72
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x21
High Quality Metal Ore iconTransparent item
x48
High Quality Metal Ore iconTransparent item
x87
High Quality Metal Ore iconTransparent item
x100
High Quality Metal Ore iconTransparent item
x100

Result =


High Quality Metal iconTransparent item
x975


Charcoal iconTransparent item
x750


Metal[]

1k Metal Ore (Charcoal Saved)
Wood iconTransparent item
x336
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x67
Metal Ore iconTransparent item
x68

Result =

Metal Fragments iconTransparent item
x1000
Charcoal iconTransparent item
x251
2k Metal Ore (Charcoal Saved)
Wood iconTransparent item
x695
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x139
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x139

Result =

Metal Fragments iconTransparent item
x2000
Charcoal iconTransparent item
x521
2.8k Metal Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x66
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x138
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200
Metal Ore iconTransparent item
x200

Result =

Metal Fragments iconTransparent item
x2804
Charcoal iconTransparent item
x750
4.5k Metal Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x161
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x342
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x76
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400
Metal Ore iconTransparent item
x400

Result =

Metal Fragments iconTransparent item
x4579
Charcoal iconTransparent item
x1500
5.1k Metal Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x84
Metal Ore iconTransparent item
x373
Metal Ore iconTransparent item
x500
Metal Ore iconTransparent item
x500
Metal Ore iconTransparent item
x500
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x175
Metal Ore iconTransparent item
x500
Metal Ore iconTransparent item
x500
Metal Ore iconTransparent item
x500
Metal Ore iconTransparent item
x500
Wood iconTransparent item
x500
Metal Ore iconTransparent item
x500
Metal Ore iconTransparent item
x500

Result =

Metal Fragments iconTransparent item
x5134
Charcoal iconTransparent item
x1875
5.9k Metal Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x84
Metal Ore iconTransparent item
x374
Metal Ore iconTransparent item
x600
Metal Ore iconTransparent item
x600
Metal Ore iconTransparent item
x600
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x175
Metal Ore iconTransparent item
x510
Metal Ore iconTransparent item
x600
Metal Ore iconTransparent item
x600
Metal Ore iconTransparent item
x600
Wood iconTransparent item
x1000
Metal Ore iconTransparent item
x600
Metal Ore iconTransparent item
x600


Result =

Metal Fragments iconTransparent item
x5943
Charcoal iconTransparent item
x2250


Sulfur[]

1k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x168
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x67
Sulfur Ore iconTransparent item
x67

Result =

Sulfur iconTransparent item
x1000
Charcoal iconTransparent item
x126
2k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x348
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x139
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x139

Result =

Sulfur iconTransparent item
x2000
Charcoal iconTransparent item
x261
3k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x540
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x216

Result =

Sulfur iconTransparent item
x3000
Charcoal iconTransparent item
x405
4k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x748
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x299
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x299
Sulfur Ore iconTransparent item
x299
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x298
Sulfur Ore iconTransparent item
x299
Sulfur Ore iconTransparent item
x299

Result =

Sulfur iconTransparent item
x4000
Charcoal iconTransparent item
x561
5k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x975
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x297
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x390
Sulfur Ore iconTransparent item
x390
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x390
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x390
Sulfur Ore iconTransparent item
x390

Result =

Sulfur iconTransparent item
x5000
Charcoal iconTransparent item
x732
5.1k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x66
Sulfur Ore iconTransparent item
x297
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x138
Sulfur Ore iconTransparent item
x389
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x215
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400
Sulfur Ore iconTransparent item
x400

Result =

Sulfur iconTransparent item
x5105
Charcoal iconTransparent item
x750
7.7k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x77
Sulfur Ore iconTransparent item
x161
Sulfur Ore iconTransparent item
x574
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x252
Sulfur Ore iconTransparent item
x698
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x352
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800

Result =

Sulfur iconTransparent item
x7714
Charcoal iconTransparent item
x1500


8k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x71
Sulfur Ore iconTransparent item
x231
Sulfur Ore iconTransparent item
x533
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x148
Sulfur Ore iconTransparent item
x322
Sulfur Ore iconTransparent item
x659
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x422
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800
Sulfur Ore iconTransparent item
x800

Result =

Sulfur iconTransparent item
x7986
Charcoal iconTransparent item
x1500


8.3k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x83
Sulfur Ore iconTransparent item
x274
Sulfur Ore iconTransparent item
x636
Sulfur Ore iconTransparent item
x1000
Sulfur Ore iconTransparent item
x1000
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x174
Sulfur Ore iconTransparent item
x385
Sulfur Ore iconTransparent item
x778
Sulfur Ore iconTransparent item
x1000
Sulfur Ore iconTransparent item
x1000
Wood iconTransparent item
x500
Sulfur Ore iconTransparent item
x1000
Sulfur Ore iconTransparent item
x1000

Result =

Sulfur iconTransparent item
x8330
Charcoal iconTransparent item
x1873


8.5k Sulfur Ore (Charcoal Saved)
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x76
Sulfur Ore iconTransparent item
x160
Sulfur Ore iconTransparent item
x251
Sulfur Ore iconTransparent item
x351
Sulfur Ore iconTransparent item
x462
Wood iconTransparent item
x1000
Sulfur Ore iconTransparent item
x587
Sulfur Ore iconTransparent item
x730
Sulfur Ore iconTransparent item
x898
Sulfur Ore iconTransparent item
x1000
Wood iconTransparent item
x500
Sulfur Ore iconTransparent item
x1000
Sulfur Ore iconTransparent item
x1000
Sulfur Ore iconTransparent item
x1000
Sulfur Ore iconTransparent item
x1000

Result =

Sulfur iconTransparent item
x8515
Charcoal iconTransparent item
x1873


Notes[]

  • It takes 120 seconds to craft one Large Furnace.
  • The large furnace has 18 slots (3 times that of the normal furnace)
  • The rate of smelting does not differ in the large furnace. It allows for more simultaneous smelting.
  • The Large Furnace costs 100 less Stone and half the Low Grade Fuel than its equivalent, three regular Furnaces, would cost. Compared with the amount of wood used by a regular furnace, it burns about 40% as much wood for Metal Ore, 80% when making Sulfur, and about one third for High Quality Metal. The ratio of wood to charcoal is the same for both furnaces; an amount exactly or almost exactly equal to three quarters of the amount of wood burned.
  • Must be placed on open terrain, It cannot be placed on a foundation. Update: As of devblog 159 or 160 they can now be placed inside with a floor grill above (for ventilation) so they can now be secured in your base.
  • Cannot be placed on steep hills.
  • For truly huge operations, the consideration of total space becomes greater, and it may be preferable to spend more on wood and keep the building footprint smaller, with a giant room full of normal Furnaces.


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