Prusa Mini+ - General Print Quality Issue Troubleshooting

Common Issues: Gaps in prints, filament popping, blobs, clogged nozzle

1. Check Filament Quality

• Filament Condition: Ensure you’re using quality filament. To rule out wet or faulty filament, try printing with known-good filament to see if the issue persists.

2. Test with a Known Good Model

• If this is your first time printing a specific model, try printing a reliable test model to rule out model-specific or setting issues.

3. Run Self-Tests

• Check for any failed self-tests or calibration issues. Address any problems identified in the tests.
• For guidance and test instructions, refer to the Prusa Knowledge Base:
• Selftest failed (MINI/MINI+) | Prusa Knowledge Base (prusa3d.com)
  

4. Perform Regular Maintenance

• Ensure all maintenance tasks are up to date. Refer to the following for a comprehensive maintenance guide:
• Regular maintenance (MINI) | Prusa Knowledge Base (prusa3d.com)
  

5. Clean the Nozzle

• Inside: If you suspect a clog, perform a couple of cold pulls. Note that switching from PLA to PETG at PLA temperatures can lead to issues.
• For instructions on cold pulls, see the Prusa guide.
  Cold pull (MINI) | Prusa Knowledge Base (prusa3d.com)
  
• You can also use an acupuncture needle (included in the cleaning kit) to clean the inside of the nozzle.

• Outside: If the outside of the nozzle has plastic buildup, heat the nozzle for 5 minutes, then turn off the printer. Use a small brass brush to gently remove any residue, being cautious around the heater and thermistor wires.

6. Consider Replacing the Nozzle as a last step

• Nozzles can wear over time and lead to print issues. If cleaning doesn’t resolve the problems, consider replacing the nozzle.
  • For replacement guidance, check:

    • Changing/replacing the nozzle (MINI) | Prusa Knowledge Base (prusa3d.com)

7. Additional Resources

• For more troubleshooting, refer to the Prusa Knowledge Base:
  • Original Prusa MINI | Print Quality Troubleshooting