Blast Furnace
Blast Furnace smelts ores and metal armour twice as fast as a regular furnace — the workstation of the armorer villager.
1.21
Description
Blast Furnace is crafted from one furnace, five iron ingots, and three smooth stone blocks arranged in the standard pattern. The device complements its food-focused sibling the smoker: it accepts only ores, metal tools, and metal armour, smelting them in five seconds instead of ten — twice the speed of a regular furnace. Players running large iron or copper farms switch to this device almost immediately for the throughput.
A secondary use makes the device essential outside production: feeding old metal tools and armour into it returns one iron or gold nugget per item — useful for recycling damaged loot from dungeons and abandoned mineshafts. Like the smoker, the block serves as the workstation of the armorer villager profession; placing it in an unstaffed village recruits an unemployed villager into the armorer role, unlocking trades for diamond armour at master level. Mining returns the device intact regardless of contents.
A secondary use makes the device essential outside production: feeding old metal tools and armour into it returns one iron or gold nugget per item — useful for recycling damaged loot from dungeons and abandoned mineshafts. Like the smoker, the block serves as the workstation of the armorer villager profession; placing it in an unstaffed village recruits an unemployed villager into the armorer role, unlocking trades for diamond armour at master level. Mining returns the device intact regardless of contents.
Guide
How to use a Blast Furnace in Minecraft
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1
Craft a Blast Furnace by placing
Craft a Blast Furnace by placing 1 Furnace in the center of a crafting table, 5 Iron Ingots across the top row and sides (top-left, top-center, top-right, middle-left, middle-right), and 3 Smooth Stone blocks in the bottom row. You receive 1 Blast Furnace.
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2
Place the Blast Furnace in your
Place the Blast Furnace in your base and open it with right-click. The interface is identical to a regular Furnace: fuel slot (bottom left), input slot (top left), and output slot (right).
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3
Add fuel to the fuel slot.
Add fuel to the fuel slot. Blast Furnace accepts coal, charcoal, lava buckets, and other standard furnace fuels.
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4
Place ores, raw metal items, or
Place ores, raw metal items, or metal armor and tools in the input slot. Blast Furnace smelts each item in 100 ticks (5 seconds) — twice as fast as a regular Furnace. Note: Blast Furnace cannot cook food or smelt sand into glass.
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5
Collect the smelted ingots or nuggets
Collect the smelted ingots or nuggets from the output slot. Old metal tools and armor yield 1 iron or gold nugget each when smelted — useful for recycling damaged equipment.
Tip
A Blast Furnace placed in a village without an Armorer will recruit an unemployed villager into the Armorer profession, who can trade diamond armor at master level.
How to craft this block
Crafting
Blast Furnace
1
Frequently asked questions
What can a Blast Furnace smelt in Minecraft?
A Blast Furnace smelts ores (iron, gold, copper, etc.), raw metal items, and metal armor and tools. It cannot cook food, smelt sand into glass, or process non-metallic materials. For food, use a Smoker or regular Furnace.
How much faster is a Blast Furnace than a regular Furnace?
A Blast Furnace processes each item in 100 ticks (5 seconds) while a regular Furnace takes 200 ticks (10 seconds). This makes the Blast Furnace exactly twice as fast for ores and metals. Fuel consumption per item is identical, so the Blast Furnace delivers double the throughput at the same fuel cost.
How do I craft a Blast Furnace?
Place 1 Furnace in the center of the crafting grid, 5 Iron Ingots in the top row and middle left/right slots, and 3 Smooth Stone blocks in the bottom row. Smooth Stone is made by smelting regular Stone in a Furnace. The recipe yields 1 Blast Furnace.
What villager profession uses a Blast Furnace?
The Armorer villager profession uses the Blast Furnace as its job site block. Placing a Blast Furnace in a village without an active Armorer will convert a nearby unemployed villager into an Armorer, who trades iron, chain, and diamond armor at various levels.
Can a Blast Furnace smelt tools and armor?
Yes. A Blast Furnace can smelt metal tools and armor made from iron or gold. Smelting them yields 1 iron or gold nugget per item, regardless of durability. This is a useful way to recover materials from damaged equipment found in dungeons or abandoned mineshafts.
When was the Blast Furnace added to Minecraft?
The Blast Furnace was added in Java Edition 1.14 (Village and Pillage update), released in April 2019. It was introduced alongside the Smoker and overhaul of villager professions to give players specialized smelting tools.
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