A blast furnace in Minecraft smelts ores, raw metals, and metal armor or tools twice as fast as a regular furnace, making it the essential upgrade for any player who needs to process large quantities of iron, gold, or netherite quickly. Unlike a standard furnace, it cannot smelt food, glass, or any non-metal items, but it serves the unique role of turning a jobless villager into an armorer, unlocking valuable trades for diamond gear and enchanted books.
What does a blast furnace do in Minecraft?
The blast furnace is a specialized workstation block that smelts ores, raw metals, and metal armor or tools at double the speed of a regular furnace. It accepts only these item types: iron ore, gold ore, copper ore, ancient debris, raw iron, raw gold, raw copper, and any iron, gold, or chainmail armor or tools. It does not smelt food, cobblestone, sand, or any other non-metal material. When placed near a jobless villager, the villager claims the block and becomes an armorer, giving you access to trades like chainmail armor, iron armor, diamond armor, and enchanted books.
How to craft a blast furnace in Minecraft
To craft a blast furnace, you need a furnace, five iron ingots, and three smooth stone. Follow these steps on a crafting table:
- Make or obtain a furnace first. You can craft one using eight cobblestones in a 3x3 grid, leaving the center slot empty. Cobbled deepslate or blackstone can be used as alternatives to cobblestone when crafting a furnace.
- Gather five iron ingots. Smelt iron ore in a furnace with any fuel source.
- Gather three smooth stone. Smelt cobblestone in a furnace to make stone, then smelt that stone again to get smooth stone.
- Open a crafting table and place the furnace in the center slot.
- Place three iron ingots across the top row of the 3x3 grid.
- Place one iron ingot in the left middle slot and one iron ingot in the right middle slot.
- Place three smooth stone across the bottom row.
- Take the blast furnace from the result slot and move it to your inventory.
Where to find a blast furnace in Minecraft
Blast furnaces generate naturally in villages, specifically inside the armorer house. If a village has an armorer building, that is the place to check for the block. You can steal a furnace from weaponsmith houses in the plains, desert, savanna, or snowy tundra biomes. You can mine a blast furnace with any pickaxe to collect it; without a pickaxe, the block will break and drop nothing. If you steal the blast furnace and accidentally hit the villager, the character can get upset with you and make you pay skyrocketing prices during trades. To calm down an angered villager, staying away from them for a while should work. Finding one in a village saves you the materials and crafting time, especially early in the game when iron and smooth stone are scarce.
How to use a blast furnace to smelt items
Place the blast furnace on the ground and open its interface. Put fuel in the fuel slot, coal, charcoal, lava buckets, blaze rods, or kelp blocks all work. Put a valid item like iron ore, raw gold, or an iron chestplate in the input slot. The blast furnace will smelt the item twice as fast as a regular furnace, and the finished product appears in the output slot. Because it consumes fuel at double the rate, you will go through coal or lava faster than you would with a standard furnace.
Is a blast furnace worth it?
Yes, the blast furnace is worth crafting or finding for two main reasons. First, it cuts smelting time in half for ores, raw metals, and metal gear, which is a huge time saver when you need to process stacks of iron or gold. Second, it is the only block that creates an armorer villager, giving you a reliable source of diamond armor, enchanted books, and other high-value trades. The tradeoff is faster fuel consumption and less experience per smelt compared to a regular furnace, but the speed and villager utility make it a valuable upgrade for any base. If you are setting up a dedicated smelting area, pairing a blast furnace with a regular furnace lets you handle metal items quickly while still cooking food and stone at a normal pace. For players who rely on wireless networks and hotspots to play Minecraft on the go, having a blast furnace ready means you can process materials efficiently even during short play sessions.
Frequently Asked Questions
Can a blast furnace smelt diamonds or emeralds?
No, a blast furnace cannot smelt diamond ore, emerald ore, or any other ore that is not iron, gold, or copper. Those ores must be smelted in a regular furnace.
Does a blast furnace give less experience than a regular furnace?
Yes, smelting an item in a blast furnace yields less experience than smelting the same item in a regular furnace. The tradeoff is speed over XP.
Can you use a blast furnace to cook food?
No, a blast furnace only smelts ores, raw metals, and metal armor or tools. Food must be cooked in a regular furnace, smoker, or campfire.
What fuel works best in a blast furnace?
Coal and charcoal are the most common fuels. Lava buckets last longer but are harder to obtain in bulk. Kelp blocks are renewable and efficient if you have a kelp farm.
How do you make a villager become an armorer?
Place a blast furnace near a jobless villager. The villager will claim the block and change their profession to armorer, gaining new trades you can unlock by leveling them up.
