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Bloomery chimney
Grid Bloomery Chimney.png
Stackable No
Material Ceramic
Drops 2-4 Fire bricks

Bloomery base
Grid Bloomery base.png
Stackable No
Material Ceramic
Drops 4-8 Fire bricks


The bloomery is a functional block that can be used in the advanced stages of the game for smelting glass and metals like iron that require temperatures that cannot be obtained using the firepit. It accepts most coal fuels, except brown coal, and boosts their temperature to be able to smelt quartz and iron ore.


The complete bloomery consists of two blocks: the base and the chimney. The separate bloomery blocks must be assembled as a unit to use. Crafting both blocks requires a total of 12 fire bricks and is carried out in the player's crafting grid:


Fire Brick

Fire Brick

Fire Brick

Fire Brick

Fire Brick

Fire Brick

Fire Brick

Fire Brick


Fire Brick

Fire Brick

Fire Brick

Fire Brick

Bloomery Chimney

Once these two blocks are crafted, place the base on a solid surface, then place the chimney on the top of the base to complete the bloomery. A complete bloomery is shown at right.


Bloomery with items.png
Bloomery ignited.png

Smelting items in a bloomery requires high temperature fuel and the desired item to process. A bloomery holds enough ore nuggets to make a maximum of 6 iron blooms or metal ingots (copper, gold), from 120 nuggets, or 12 glass blocks, from 24 quartz, and 20 fuel items. The bloomery does not have to be completely filled to fire it, but both the ores to be smelted and the fuel to complete the smelting process must be added to start the process. The bloomery does not have a GUI. A player may read the description of the items currently in the bloomery by aiming the white crosshairs at the base block. The interface window should display any currently loaded contents when the block info GUI is enabled (press 'B', by default).

  1. Loading the bloomery: Aim at the bloomery base and place the item, e.g. quartz, into the base. Be sure to add fuel as well, but only after the ores or quartz. 'Sneaking' while loading items allows players to place multiple items (5) into the bloomery base.
  2. Firing the bloomery: To ignite the bloomery and begin smelting, use a torch/fire starter on the base. After a few seconds smoke particles should begin to rise from the chimney, and the hole in the base block will glow and spark.
  3. Harvesting the bloomery: After 10 hours the smelting process is completed, break the bloomery blocks to gather the product. Breaking the bloomery does not require a tool and will drop some fire bricks used in crafting another bloomery.

Note: You will recover 6–12 bricks when breaking the bloomery, on average about 9. Expect to spend 3 bricks per bloomery run for large-scale operations.

Charcoal.png Protip:
While the bloomery holds 20 fuel items, not all are needed to fuel the maximum amount for iron blooms, metal ingots or glass. Since Version 1.12.10 however, the bloomery will automatically keep you from inputting more fuel items then are actually needed. This way, inputting as much fuel as the bloomery will take ensures a successful smelting process while not wasting any fuel.
The bloomery accepts charcoal, bituminous (black) coal and anthracite - or generally any fuel that burns with at least 1200°C, for at least 30 seconds.

Game Versions

In game versions prior to 1.12, the bloomery produced iron ingots.
In game version 1.12, the bloomery produces iron blooms, which must be heated and worked on an anvil with a hammer or helvehammer to produce iron ingots.

Tutorial Video: Using the Bloomery (prior to 1.12)


Vanilla Game Content
Terrain Blocks

Rawclay blue.pngClay Grid Gravel Granite.pngGravel Peat.pngPeat Grid Rock granite.pngRock Grid Granite sand.pngSand Grid Barren low fertility soil.pngSoil

Construction Blocks

Claybricks-blue.pngCeramic Blocks Glass-plain.pngGlass Planks-oak.pngPlanks Grid Diagonal logs plaster.pngPlaster Grid Cob.pngSoil Blocks Grid Polished Granite.pngStone Blocks Grid Stone path.pngPath

Functional Blocks

Grid Barrel.pngBarrel Grid Woodbucket.pngWooden Bucket Bed-wood-head-north.pngBed Chest-east.pngContainers Firepit lit.pngFirepit Forge.pngForge Grid Loot Vessel.pngCracked Vessels Grid Ore blasting bomb.pngOre blasting bomb Grid Large trough.pngTrough

Decorative Blocks

Grid Painting.pngPainting Mediumcarpet-turqoise-ns.pngCarpets Bookshelves-ns.pngBookshelves Flowerpot-earthern-empty.pngFlowerpots Agedwallpaperplanks-green-east.pngWallpapers Salvation.pngTapestry

Metal Working

Grid Copper anvil.pngAnvil Bloomery.pngBloomery Grid Crucible burned.pngCrucible Forge.pngForge Grid Tin bronze helve hammer.pngHelve_hammer Ingot Mold Burned.pngMolds Grid Copper Ingot.pngMetal Gem-emerald-rough.pngGemstone

Tools & Weapons

Grid Copper axe.pngAxe Bow-simple.pngBow Grid Copper Chisel.pngChisel Grid copper cleaver.pngCleaver Grid Wooden club.pngClub Grid Copper hammer.pngHammer Hoe-copper.pngHoe Knife-copper.pngKnife Pickaxe-copper.pngPickaxe Grid Copper prospecting pick.pngProspecting Pick Grid Copper saw.pngSaw Scythe-copper.pngScythe Grid Copper shears.pngShears Grid Crude Square Shield.pngShield Shovel-copper.pngShovel Grid Copper spear.pngSpear Sword-copper.pngSword


Armor-body-brigandine-iron.pngArmor Clothes-upperbody-lackey-shirt.pngClothes Grid Backpack.pngBags

Craftable Resources

Grid Oak board.pngBoards Charcoal.pngCharcoal Coke.pngCoke Grid Firewood.pngFirewood Grid Copper Ingot.pngIngots Grid Raw hide.pngLeather Flaxtwine.pngFlax


Berrybush red currant ripe.pngBerries Grid mushroom bolete.pngMushrooms Grid Cattail tops.pngCooper's Reed (Cattail) Flower-californiapoppy.pngFlowers Tallgrass-tall.pngGrass Tallfern.pngOther Plants Sapling-oak.pngTrees Sapling-oak.pngFruit Trees Flax.pngWild Foods


Bear-male-polar.pngBear BeeMob.pngBees Creature-bell-normal.pngBell Bighorn.pngBighorn sheep Rooster.pngChicken Normal Drifter.pngDrifter Creature-fox-male.pngFox Hare-male-lightbrown.pngHare Hyena.pngHyena Locust.pngLocust Raccoon.pngRaccoon Pig.pngWild Pig Wolf.pngWolf


Pig.pngAnimal Husbandry Grid Empty skep.pngBeekeeping Grid Crucible burned.pngCasting Grid Blue clay.pngClay Forming Sword-copper.pngCombat Hoe-copper.pngFarming Bread-spelt.pngCooking Bone.pngHealth Flax.pngSatiety Grid Flint arrow head.pngKnapping Grid Angled Gears.pngMechanical Power Pickaxe-copper.pngMining Grid Copper anvil.pngSmithing Creature-humanoid-trader-treasurehunter.pngTrading Gear-temporal.pngTemporal Stability Grid Copper hammer.pngSteel Making


Grid Lore Book.pngCrafting Recipes Charcoal.pngFuel Grid Raw hide.pngLeather Working Torch.pngLight sources Grid Copper Chunk.pngOre Deposits Grid Ruins.pngRuins Grid Lore Scroll.pngStarter Guide Berrybush blueberry ripe.pngWorld Generation