To fix stringing in wall-thickness 3D models, focus on 4 key steps to stop molten filament oozing between wall sections: adjust retraction, lower nozzle temperature, increase travel speed, and maintain filament/nozzle.
1. **Retraction**: Increase retraction distance (1-3mm) or speed (30-60mm/s) to pull filament back during nozzle travel—this stops drips before they reach thin walls. 2. **Temperature**: Lower nozzle temp by 5-10°C—less fluid filament is less likely to ooze while the nozzle moves. 3. **Travel speed**: Boost speed to 50-100mm/s—faster moves reduce the time filament has to drip between walls. 4. **Maintenance**: Clean a clogged nozzle (use a needle) or dry damp filament (store in a dryer—PLA/PETG absorb moisture easily, worsening oozing).
These steps target the main causes of stringing in thin-wall prints, making adjustments simple and effective for cleaner results.