Perform a Cold Pull to Clear Nozzle Debris

Tools: Pliers, heat-resistant gloves.

Steps:

1. Heat the nozzle to 200°C for PLA, then allow it to cool to 90°C.

2. While the plastic is in a semi-solid state, quickly pull the filament out of the hotend.

3. Inspect the tip of the filament for debris.

4. Cut off the dirty end and repeat until the extracted filament is clean.

Verification: The filament tip should come out clean and shaped like the internal nozzle cavity.