Definition
“Slag burner” is community shorthand for the heat stage.
The captured Steam discussion says lava can be placed inside a filter so slag passing over it cooks automatically; a developer reply calls it an autoburner setup. Treat this as COMMUNITY behavior for that build, not an official blueprint.
Use sequence
Keep burning and pressing as two separate stages.
The frozen publisher-wiki SERP snippet says the Kinetic Slag Press turns 1 Burnt Slag into 1 Gold and 1 Spore. That numeric recipe is BOUNDED search-result evidence, not a VERIFIED first-hand test; confirm it in the current Early Access build.
BOUNDED numeric snippet + COMMUNITY heat-stage pattern · current-build verification required.
Layout guidance
Separate the hot zone, recirculation check, and press feed.
- Contain lava inside the filter area described by the discussion.
- Let slag pass over the hot zone rather than mixing lava into the main feed.
- Keep a route for burnt slag to leave toward the press.
- The discussion suggests recirculating uncooked slag that slips through; test that failsafe with a small batch.

Evidence boundary
No first-hand recipe or ratio claim.
The lava-and-filter behavior and recirculation suggestion come from one captured Steam discussion. The press role comes from a frozen publisher-wiki SERP result. Reproduce both in the current build before relying on the layout.
Quick checks
Questions this page can answer
Is slag burner an official machine name here?
This page uses it as community shorthand for the heat stage.
Are exact outputs verified?
The 1 Gold plus 1 Spore output is BOUNDED SERP-snippet evidence, not VERIFIED first-hand play; recheck it in the current build.
Source ledger
Evidence and scope
VERIFIED marks frozen first-party facts. BOUNDED and COMMUNITY sources can guide a task but do not become official claims.
- VERIFIEDSteamOpen source ↗
Supports the official Sandustry identity and automation premise.
- BOUNDEDHooded Horse Kinetic Slag Press entryOpen source ↗
Supports the BOUNDED Kinetic Slag Press role and the frozen snippet's 1 Burnt Slag to 1 Gold plus 1 Spore output.
- COMMUNITYSteam discussion: slag furnaceOpen source ↗
Supports the COMMUNITY lava-and-filter setup discussion.
Next task
Learn about Crackstone
Continue through the field manual without losing the evidence boundary.