I am facing persistent issues with under-extrusion and print instability on my Creality CR6 SE 3D printer. Despite using different PLA filaments from various manufacturers such as Eryone, Jayo, Prusament, Redline, and Amazon Basic, I consistently encounter problems with thin lines and unreliable prints.

Notably, the same filaments perform well on my Prusa Mini, ruling out filament quality as the sole culprit.

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Here are the key details:

  • Running the latest Community Firmware.
  • PLA filaments are stored adequately, ranging from a few weeks to several years old.
  • Hotend temperature settings range from 205-215 °C with a 60 °C heated bed.
  • Standard settings slightly modified for wider inner perimeters (0.6 mm) and higher temperature for stability.
  • Occasional difficulties during filament changes, even with the extruder released and the nozzle adequately heated.

I have performed some troubleshooting steps, including changing filaments, adjusting Z offset, and ensuring proper storage conditions. However, the issue persists. I also cleaned the extruder. Could it helb to replace the PTFE tube with a Capricorn tube?

Are there additional steps I should consider or specific settings that could be impacting my print quality? Any insights or guidance would be greatly appreciated.

I have checked other questions on this site, but with no helpfull result for me.


1 Answer 1


Try following a guide on debugging under-extrusion all the way through.

The most obvious point you did not list in your question are: checking the mechanics of the extruder and cleaning the nozzle:

  • Making sure the extruder gear theeth are clean and sharp
  • Ensure proper spring tension is pressing the filament to the extruder gear
  • Check if the motor has enough force/current to push the filament through your fingers if you press them together
  • Calibrate the E-Steps
  • Check that volumetric E is not enabled in your slicer settings.
  • Make sure you can manually push filament through the heated nozzle without too much force
  • Perform a cold pull or several
  • etc.

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