Filament Grinding at the Extruder

Document the failure and confirm that it matches this guide: The drive gear chews a groove, creates dust, or stops advancing filament.

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

Check nozzle restriction. Clear downstream restriction.

Check idler pressure too high or low. Clean the drive gear.

Inspect retraction too aggressive. Reset idler pressure.

Rule out soft filament or hot enclosure. Reduce extreme retraction.

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.