Do not inspect the whole belt
Find the exact tile where movement stops, then check what that tile is trying to feed.
Transport troubleshooting
Sandustry Conveyor Problems: Direction, Overflow And Wrong Drop Points
Quick diagnosis: start at the last moving item before the jam. The failure is usually direction, drop point, blocked output or mixed materials.
Four conveyor failure modes
Wrong direction
The belt looks connected, but the flow points away from the target.
Overflow
The line receives more material than the next stage can accept.
Blocked output
The machine may be fine; the tile it drops into is full.
Wrong drop point
Material lands beside the intended input or mixes with another stream.
Diagnosis order
Find the last moving item
The first stopped tile tells you more than the start of the line.
Check the receiving tile
If the destination is full or offset, the conveyor cannot fix it.
Separate materials before filtering
Use Filters to solve a known routing problem, not to hide a mixed input.
Test one segment
Disconnect upstream feed and confirm a short route behaves before reconnecting the whole chain.
What the sources establish
Most conveyor failures come from the exact tile where movement stops, not from the whole route at once.
What it does not cover
This guide does not claim the best logistics layout for every factory, a universal belt throughput number, or that every jam is a belt problem rather than an output or drop-point problem.
Featured Questions
Why are my conveyors not working in Sandustry?
The usual causes are wrong direction, blocked output, bad drop point, or incompatible materials sharing the same short route.
How do you fix a conveyor jam in Sandustry?
Find the last moving item, inspect the receiving tile, and fix that exact handoff before changing the whole belt line.
Primary Sources
Source note: Use the linked source for the underlying reference. Early Access details can change.
Official source