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Build a 3-furnace auto-smelter, then run a furnace speed tournament.
A mountain of raw iron just arrived. One furnace would take ages. Build a smelter that breathes fire for you.
- New skill Hopper-fed furnaces
- Level 6 · Inventor's Lab
- Difficulty Intermediate
- Mode Creative
- Time 40–50 min
- Ages 13+
What you’ll build
Build a row of three furnaces fed automatically by hoppers, with every ingot flowing into one chest that lights a lamp. Time one furnace against all three, then hold a speed tournament between furnaces, blast furnaces and smokers.
Finish line: Your triple smelter fills the chest on its own, and you know which furnace wins the speed tournament.
Bonus challenge: Make your fuel factory too: grow kelp, dry it in a furnace, craft dried kelp blocks and feed them to the smelter. A machine fuelled by the sea!
You’ll need
- Furnaces
- Blast furnace and smoker
- Hoppers and chests
- Comparator and lamp
- Raw iron and food
- Fuel
You choose
- My smelter's name
- Fuel: coal or dried kelp blocks
- My bet for the speed champion
Stuck?
- Items in the top hopper, fuel in the side hoppers. Mix them up and nothing smelts.
- Ingots stuck? The hopper under each furnace must point along the line towards the chest.
- Blast furnaces only smelt ores and metal; smokers only cook food.
For grown-ups
Get this mission
This mission is in Mission Pack 54. Each printable has the full steps, a Plan & Log page and a parent page.
Print one mission at a time. You never need to print everything.
Played on Minecraft Bedrock on iPad. Buttons can differ on other devices and versions.