Cold Pull Nozzle Cleaning Guide

Document the failure and confirm that it matches this guide: A partial clog remains after a normal purge and extrusion is inconsistent.

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

Check burnt polymer residue. Use a compatible cleaning filament.

Check mixed-material contamination. Follow hotend-specific temperatures.

Inspect fine debris. Pull straight without twisting hardware.

Rule out incorrect pull temperature. Repeat only until debris stops appearing.

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.