Loose Belt Symptoms and Adjustment

Document the failure and confirm that it matches this guide: Layers shift, circles look flat, corners ring, or belts visibly flutter.

Return extreme overrides to a known printer, nozzle, material, and slicer profile so the diagnosis starts from a stable baseline.

Check belt tension too low. Check pulley set screws.

Check pulley set screw loose. Inspect belt teeth and tracking.

Inspect belt damaged or stretched. Adjust to manufacturer guidance.

Rule out tension too high. Run a short motion test.

Change only the single setting or hardware condition supported by the evidence, then run a small test that reproduces the original failure.

Compare the test against the target condition, record the successful value, and save it in a printer/material profile before repeating the full print.