Large Furnace

—Information accurate as of: build 904.83

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)

x1000	x6	x29	x60	x100	x100
	x13	x39	x72	x100	x100
	x21	x48	x87	x100	x100

Result =

Metal

1k Metal Ore (Charcoal Saved)

x336	x66	x66	x67	x67	x67
	x66	x66	x67	x67	x67
	x66	x66	x67	x67	x68

Result =

2k Metal Ore (Charcoal Saved)

x695	x66	x138	x138	x138	x138
	x138	x138	x138	x138	x139
	x138	x138	x138	x138	x139

Result =

2.8k Metal Ore (Charcoal Saved)

x1000	x66	x200	x200	x200	x200
	x138	x200	x200	x200	x200
	x200	x200	x200	x200	x200

Result =

4.5k Metal Ore (Charcoal Saved)

x1000		x161	x400	x400	x400
x1000		x342	x400	x400	x400
	x76	x400	x400	x400	x400

Result =

5.1k Metal Ore (Charcoal Saved)

x1000	x84	x373	x500	x500	x500
x1000	x175	x500	x500	x500	x500
x500				x500	x500

Result =

5.9k Metal Ore (Charcoal Saved)

x1000	x84	x374	x600	x600	x600
x1000	x175	x510	x600	x600	x600
x1000				x600	x600

Result =

Sulfur

1k Sulfur Ore (Charcoal Saved)

x168	x66	x66	x67	x67	x67
	x66	x66	x67	x67	x67
	x66	x66	x67	x67	x67

Result =

2k Sulfur Ore (Charcoal Saved)

x348	x66	x138	x138	x138	x138
	x138	x138	x138	x138	x139
	x138	x138	x138	x138	x139

Result =

3k Sulfur Ore (Charcoal Saved)

x540	x66	x215	x215	x215	x215
	x138	x215	x215	x215	x215
	x215	x215	x215	x215	x216

Result =

4k Sulfur Ore (Charcoal Saved)

x748	x66	x298	x298	x298	x299
	x138	x298	x298	x299	x299
	x215	x298	x298	x299	x299

Result =

5k Sulfur Ore (Charcoal Saved)

x975	x66	x297	x389	x390	x390
	x138	x389	x389	x389	x390
	x215	x389	x389	x390	x390

Result =

5.1k Sulfur Ore (Charcoal Saved)

x1000	x66	x297	x400	x400	x400
	x138	x389	x400	x400	x400
	x215	x400	x400	x400	x400

Result =

7.7k Sulfur Ore (Charcoal Saved)

x1000	x77	x161	x574	x800	x800
x1000		x252	x698	x800	x800
		x352	x800	x800	x800

Result =

8k Sulfur Ore (Charcoal Saved)

x1000	x71	x231	x533	x800	x800
x1000	x148	x322	x659	x800	x800
		x422	x800	x800	x800

Result =

8.3k Sulfur Ore (Charcoal Saved)

x1000	x83	x274	x636	x1000	x1000
x1000	x174	x385	x778	x1000	x1000
x500				x1000	x1000

Result =

8.5k Sulfur Ore (Charcoal Saved)

x1000	x76	x160	x251	x351	x462
x1000		x587	x730	x898	x1000
x500		x1000	x1000	x1000	x1000

Result =

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.

Items
Ammunition	12 Gauge Buckshot • 12 Gauge Slug • 5.56 Rifle Ammo • Explosive 5.56 Rifle Ammo • Handmade Shell • High Velocity Arrow • High Velocity Rocket • HV 5.56 Rifle Ammo • HV Pistol Ammo • Incendiary 5.56 Rifle Ammo • Incendiary Pistol Bullet • Incendiary Rocket • Pistol Bullet • Rocket • Smoke Rocket • Wooden Arrow
Attire	Bandana Mask • Baseball Cap • Beenie Hat • Bone Armor • Bone Helmet • Boonie Hat • Boots • Bucket Helmet • Burlap Headwrap • Burlap Shirt • Burlap Shoes • Burlap Trousers • Candle Hat • Coffee Can Helmet • Hazmat Boots • Hazmat Gloves • Hazmat Helmet • Hazmat Jacket • Hazmat Pants • Hazmat Suit • Hide Boots • Hide Halterneck • Hide Pants • Hide Poncho • Hide Skirt • Hide Vest • Hoodie • Improvised Balaclava • Jacket • Leather Gloves • Longsleeve T-Shirt • Metal Chest Plate • Metal Facemask • Miners Hat • Pants • Riot Helmet • Road Sign Jacket • Road Sign Kilt • Santa Hat • Shirt • Shorts • Snow Jacket - Red • Tank Top • T-Shirt • Wolf Headdress • Wood Armor Pants • Wood Chestplate
Components	Bleach • Duct Tape • Empty Propane Tank • Gears • Glue • Metal Blade • Metal Pipe • Metal Spring • Rifle Body • Road Signs • Rope • Semi Automatic Body • Sewing Kit • Sheet Metal • SMG Body • Sticks • Tarp • Tech Trash
Construction	Armored Door • Armored Double Door • Barbed Wooden Barricade • Building Plan • Chainlink Fence • Chainlink Fence Gate • Code Lock • Concrete Barricade • Floor Grill • High External Stone Gate • High External Stone Wall • High External Wooden Gate • High External Wooden Wall • Ladder Hatch • Large Water Catcher • Lock • Metal Barricade • Metal horizontal embrasure • Metal Vertical embrasure • Metal Window Bars • Mining Quarry • Prison Cell Gate • Prison Cell Wall • Pump Jack • Reinforced Window Bars • Sandbag Barricade • Sheet Metal Door • Sheet Metal Double Door • Shop Front • Small Water Catcher • Stone Barricade • Tool Cupboard • Wind Turbine • Wood Double Door • Wood Shutters • Wooden Barricade • Wooden Door • Wooden Ladder • Wooden Window Bars
Food	Apple • Bear Meat • Bear Meat Cooked • Black Raspberries • Blueberries • Burned Chicken • Burned Human Meat • Burned Pork • Burned Wolf Meat • Burnt Bear Meat • Cactus Flesh • Can of Beans • Can of Tuna • Candy Cane • Chocolate Bar • Cooked Chicken • Cooked Fish • Cooked Human Meat • Cooked Pork • Cooked Wolf Meat • Corn • Corn Seed • Granola Bar • Hemp Seed • Minnows • Mushroom • Pork • Pumpkin • Pumpkin Seed • Raw Chicken Breast • Raw Fish • Raw Human Meat • Raw Wolf Meat • Rotten Apple • Small Trout • Small Water Bottle • Spoiled Chicken • Spoiled Human Meat • Spoiled Wolf Meat • Water Jug
Items	Bed • Bota Bag • Camp Fire • Ceiling Light • Double Sign Post • Furnace • Huge Wooden Sign • Jack O Lantern Angry • Jack O Lantern Happy • Landscape Picture Frame • Lantern • Large Banner Hanging • Large Banner on pole • Large Furnace • Large Wood Box • Large Wooden Sign • One Sided Town Sign Post • Paper Map • Pookie Bear • Portrait Picture Frame • Reactive Target • Repair Bench • Research Table • Salvaged Shelves • Single Sign Post • Sleeping Bag • Small Oil Refinery • Small Stash • Small Stocking • Small Wooden Sign • SUPER Stocking • Survival Fish Trap • Tuna Can Lamp • Tall Picture Frame • Two Sided Hanging Sign • Two Sided Ornate Hanging Sign • Two Sided Town Sign Post • Water Barrel • Water Purifier • Wood Storage Box • Wooden Sign • XL Picture Frame • XXL Picture Frame
Medical	Anti-Radiation Pills • Bandage • Blood • Large Medkit • Medical Syringe
Miscellaneous	Acoustic Guitar • Blueprint • Door Key • Large Present • Medium Present • Note • Small Present
Resources	Animal Fat • Battery - Small • Bone Fragments • CCTV Camera • Charcoal • Cloth • Coal • Crude Oil • Empty Can Of Beans • Empty Tuna Can • Explosives • Gun Powder • High Quality Metal • High Quality Metal Ore • Human Skull • Leather • Low Grade Fuel • Metal Fragments • Metal Ore • Paper • Research Paper • Salt Water • Stones • Sulfur • Sulfur Ore • Targeting Computer • Water • Wolf Skull • Wood
Tools	Camera • Flare • Hammer • Hatchet • Pick Axe • Rock • Salvaged Axe • Salvaged Hammer • Salvaged Icepick • Satchel Charge • Stone Hatchet • Stone Pick Axe • Supply Signal • Survey Charge • Timed Explosive Charge • Torch • Water Bucket
Traps	Auto Turret • Land Mine • Shotgun Trap • Snap Trap • Wooden Floor Spikes
Weapons	4x Zoom Scope • Assault Rifle • Beancan Grenade • Bolt Action Rifle • Bone Club • Bone Knife • Crossbow • Custom SMG • Double Barrel Shotgun • Eoka Pistol • F1 Grenade • Flame Thrower • Holosight • Hunting Bow • Longsword • LR-300 Assault Rifle • M249 • Mace • Machete • MP5A4 • Muzzle Boost • Muzzle Brake • Pump Shotgun • Revolver • Rocket Launcher • Salvaged Cleaver • Salvaged Sword • Semi-Automatic Pistol • Semi-Automatic Rifle • Silencer • Stone Spear • Thompson • Waterpipe Shotgun • Weapon Flashlight • Weapon Lasersight • Wooden Spear