Start the Blacksmith quest
The recipe stays locked until you pick up the quest "A Blast Furnace For The Blacksmith". Current guides say it appears after you enter Albaneve Summits, which asks for a Flame Altar at level 6. If the quest is missing, check that your Blacksmith survivor is rescued and placed at your base.
Albaneve is also where the Coal mine near Rothstep sits. That matters because the finished furnace burns Coal rather than Charcoal. Plan the two trips together so the furnace has fuel the moment it is built.
Take the Bellows from the Forge of Obsidia
The community wiki lists the Bellows as a drop from the Scavenger Tyrant at the Forge of Obsidia enemy camp. Treat it as a boss-style fight with a full set of healing and repaired gear. The recipe unlocks as soon as the Bellows enters your inventory.
An older 2024 Steam thread describes the Bellows as a plain enemy drop. Newer guides describe the forge camp route instead, so follow the quest marker if the two differ. Use the map guide to plan travel points before you go.
Blast Furnace recipe
The furnace is crafted at the Blacksmith's Forge and finishes instantly. Gather everything before the trip home so you can place it right away. Extra furnaces can be crafted at the Blacksmith after the quest is done.
| Material | Amount |
|---|---|
| Fired Brick | 20 |
| Bellows | 1 |
| Lump of Clay | 10 |
| Iron Bars | 10 |
| Any Sand | 30 |
Clay is the item players most often run short of. The Clay location guide covers the deposit near Revelwood landmarks. Fired Brick also uses Clay, so gather more than ten.
What the Blast Furnace smelts
The Blast Furnace makes bars in larger batches and faster than the Smelter by burning Coal. It is the station for Steel and Silver Bars, which later armor and weapons need. Times below come from the community wiki and may shift with patches.
| Output | Inputs | Time |
|---|---|---|
| 20 Steel Bars | 20 Iron Ore, 40 Coal | 10:00 |
| 20 Silver Bars | 20 Silver Ore, 40 Coal | 10:00 |
| 20 Iron Bars | 20 Iron Ore, 40 Coal | 5:00 |
| 20 Copper Bars | 20 Copper Ore, 20 Coal | 3:30 |
| 20 Bronze Bars | 10 Copper Bars, 4 Tin Bars, 10 Coal | 4:00 |
| 20 Glass | 40 Any Sand, 15 Coal | 4:30 |
Some guides quote smaller Coal costs for Steel and Silver, so check the station screen before mining. Gold and Celestium Bars are also made here later in the game. Link the furnace into your workshop with the base design guide.
Frequently asked questions
- Why can't I craft the Blast Furnace?
- You need the Bellows from the quest "A Blast Furnace For The Blacksmith". The recipe unlocks once the Bellows is in your inventory.
- Does the Blast Furnace use Charcoal?
- No. The community wiki says it burns Coal, which is mined in Albaneve Summits.