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Minecraft: How to Make and Use a Blast Furnace for Smelting

Craft a Minecraft blast furnace with 1 furnace, 5 iron ingots, and 3 smooth stone. See its layout, smelting uses, speed and fuel trade-offs, and how to automate it.
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To craft a Minecraft blast furnace, combine 1 furnace, 5 iron ingots, and 3 smooth stone in a crafting table. It smelts eligible ores, tools, and armor twice as fast as a regular furnace, but burns fuel twice as fast too—so it does not save fuel per item. Use one when faster processing matters more than the experience you would get from a regular furnace.

Blast furnace recipe and crafting layout

Use a crafting table’s 3×3 grid and place the ingredients like this:

Top row Iron ingot Iron ingot Iron ingot
Middle row Iron ingot Furnace Iron ingot
Bottom row Smooth stone Smooth stone Smooth stone

Collect the blast furnace from the crafting result. The recipe is 5 iron ingots, 1 furnace, and 3 smooth stone, as shown in Mojang’s blast furnace guide and the Java Edition 18W50A snapshot notes.

If you need to make the furnace first, use the recipe book in your edition or consult a crafting guide. The recipe-book interface differs by edition; Mojang’s crafting guide notes that Java Edition also has the recipe book in furnaces and smokers.

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What a blast furnace smelts

A blast furnace is a furnace upgrade for smelting ores and other metal-related items. Mojang describes its eligible inputs broadly as ore blocks, tools, and armor. The exact item availability can depend on your edition and game version, so check the recipe interface in your game for a particular item rather than assuming every item made of metal can be smelted.

Ore drops have changed over time: ordinary mining does not always produce an ore block. In Java snapshot 21w14a, Mojang described smeltable ores dropping raw item forms, while old-world ore blocks and ore blocks mined with Silk Touch remained smeltable. See the 21w14a notes for that version-specific change.

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How to use it

  1. Place the blast furnace where you want to smelt items.
  2. Put an eligible item in the input slot.
  3. Put a valid fuel item in the fuel slot.
  4. Wait for the smelting process to finish, then collect the result from the output slot.

The block uses fuel, but its faster processing does not reduce the total fuel needed per item. The official sources do not give an exhaustive current list of inputs or fuels for every edition and version, so use the in-game recipe and fuel interface to verify specific items.

Blast furnace vs. regular furnace

Attribute Blast furnace Regular furnace
Eligible inputs Ores, tools, and armor, as described by Mojang Broader smelting use; exact item lists depend on edition and version
Processing speed Twice as fast Baseline speed
Fuel burn rate over time Twice as fast Baseline rate
Fuel per item Same as a regular furnace Same as a blast furnace for items both can smelt
Experience from smelting About half as much as a regular furnace Higher yield than a blast furnace

Mojang’s blast furnace article explains the speed, fuel, and experience trade-offs. Choose a blast furnace when you want eligible items processed sooner and do not need the regular furnace’s higher experience yield.

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Hopper automation

Hoppers can move items into and out of a blast furnace, much as they do with a regular furnace. This lets you feed eligible inputs and fuel automatically and collect finished outputs. Make sure the items entering each slot are appropriate for that slot; for exhaustive edition-specific item behavior, check the game’s own interface.

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Where to find a blast furnace

A blast furnace may generate in an armourer’s house in a village, but its appearance is not guaranteed. If you do not find one, craft it using the recipe above. Mojang’s block guide describes the possible village location, while its Village & Pillage release announcement says blast furnaces were added to some villager buildings.

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