Slag Burner — Sandustry Building Guide
Slag Burner
| Type | Production setup |
| Input | Residue |
| Output | Burnt Residue (25% per pixel) |
| Key tool | Filter, Burner Belt, Thermal Buffer |
There is no official building named “Slag Burner” in Sandustry. Players use the term for any setup that turns Residue into Burnt Residue, the intermediate material that feeds the Kinetic Press.
Overview
Residue is the slushy by-product of sifting Wet Sand in a Shaker. Burning it is the middle step of the core Gold chain:
Wet Sand → Shaker → Gold + Residue → burn → Burnt Residue → Kinetic Press → 1 Gold + 1 Seed
When Residue touches Fire, each pixel has a 25% chance to become Burnt Residue; otherwise it burns away. Fire spreads through touching Residue pixels, so a steady feed can keep a burn pile alive.
Common Methods
| Method | Components | Notes |
|---|---|---|
| Manual | Flamethrower | Cheapest; ignite a Residue pile and feed it continuously. |
| Lava Trap | Filter + trapped Lava | Automates burning before dedicated machines are available. |
| Burner Belt | Burner Belt + Thermal Buffer | Official automated setup unlocked at Tier 2. |
| Pyro Dispenser | Pyro Dispenser + Thermal Buffer | Fires flame bursts every 3 seconds at Tier 3. |
Tips
- Burnt Residue must fall at least 25 blocks through a Kinetic Press to produce Gold and Seeds.
- Feed Residue steadily rather than burning batch by batch; a continuous stream keeps the fire alive.
- Increase Residue throughput to compensate for the 25% conversion rate.
- For detailed setups and troubleshooting, see the Slag Burner Guide.