Smelting · Speed · 1.21

How to Make a Smoker and Blast Furnace

Both start from a plain furnace, and both smelt their speciality twice as fast. Use the right one and you halve the wait at the campfire and the forge.

The two recipes

A furnace in the centre, then wrap it for the job you want.

Smoker

→

Smoker

Blast Furnace

→

Blast Furnace

Need the base first? See how to make a furnace, or grab the grids on Astroworld crafting.

Which furnace for what

Smoker - food

Meat, fish, potatoes, kelp, any food. Twice as fast as a furnace, the kitchen workhorse.

Blast furnace - ore & metal

Ores, raw metal, and metal tools or armour down to nuggets. Twice as fast for everything metal.

Furnace - everything else

Stone, glass, charcoal, terracotta. Slower, but the only one that smelts the non-food, non-metal items.

They double as job blocks

Place one near an unemployed villager and it takes the job: a smoker makes a Butcher, a blast furnace makes an Armorer. A cheap way to set up the trades you want.

Quick answers

What is the smoker recipe?

A furnace in the centre with four logs or any wood around its sides. Any wood type works.

What is the blast furnace recipe?

A furnace in the centre, five iron ingots around the top and sides, and three smooth stone along the bottom.

How much faster are they?

Twice as fast at their job. A smelt that takes ten seconds in a furnace takes five in the matching specialised block.

Do they use more fuel?

They burn fuel twice as fast to match the speed, so the fuel cost per item is the same; you just finish sooner.

Can a smoker smelt ore?

No. A smoker only cooks food and a blast furnace only handles ore and metal. For anything else you still need a plain furnace.

Are they villager workstations?

Yes. A smoker turns an unemployed villager into a Butcher; a blast furnace turns one into an Armorer. (Toolsmiths and Weaponsmiths use a smithing table and a grindstone instead.)

How many items does one piece of fuel smelt?

Same totals as a furnace, just faster. One coal or charcoal does 8 items, a lava bucket does 100, a dried kelp block does 20. A smoker or blast furnace just burns through that fuel in half the time.

Can I get the furnace back when I break a smoker?

No. Breaking any of the three drops the block itself, not its parts. You do not recover the furnace, logs, iron or smooth stone.

Do they give more XP than a furnace?

No, less. A smoker or blast furnace gives about half the experience a plain furnace would for the same item. The trade for double speed is half the XP, so use a furnace when you want the XP and a specialised block when you want throughput.

Should I smelt iron ore in a blast furnace?

Use it for raw iron, raw gold, raw copper and ore blocks. It will not smelt the non-metal stuff like cobblestone or sand, so keep a plain furnace too. To melt down old iron and gold tools or armour into nuggets, the blast furnace is the only block that does it.

Cost and common mistakes

A smoker costs one furnace plus four wood. The furnace is eight cobblestone, so the whole block is eight cobblestone and four logs or planks, any type.
A blast furnace costs one furnace, five iron ingots and three smooth stone. Smooth stone is smelted stone, not raw stone, so you smelt cobblestone into stone, then smelt that stone again into smooth stone.
The recipe needs five separate iron ingots, not a block of iron. Nine ingots crafted into a block will not work in the grid.
The smoker shape is the same as a furnace but with logs instead of cobblestone on the four sides. Leave the four corners empty.
Both blocks need fuel under them like any furnace. The 2x speed only applies to the matching item type, so a blast furnace gives no speed bonus on food and a smoker none on metal.
Use a hopper to feed fuel and items in and pull output out. Both blocks accept hoppers on the same three faces a furnace does: top for the item, side for fuel, bottom for output.

Start with a plain furnace, look up the smoker, blast furnace and smooth stone in the items database, or open the crafting recipes for both grids.