Stringing is not only a retraction problem. Moisture, nozzle temperature, travel behavior, wipe settings and pressure inside the hotend can all contribute.
How do you recognize it?
- Threads between towers or separate features
- More visible on long travels
- Often worse with wet PETG, TPU or nylon
Common causes
- Moist filament
- Nozzle too hot
- Retraction not matched to the system
- Slow or inefficient travel paths
- Residual melt pressure
What should you check first?
- Check filament condition first.
- Test temperature under realistic flow.
- Calibrate retraction after moisture and temperature.
- Use wipe/travel tuning as the final step.