I have been getting these lines where there seems to be not enough filament extruded accompanied by some clocking noises (not really grinding). Recently I got a few errors about stuck filament as well.

I did a few cold pulls but there wasn’t any debris to be seen and the three ends (cht) were clearly visible.

Noises, pattern and errors persist.

Pla, core one, max layer with 0.4 nozzle.

Any help appreciated

Edit is the image not loading for everyone?

    • BigDanishGuy@sh.itjust.worksEnglish
      1·
      12 days ago

      If temp is stable try having a look at the filament. Is the extruder grinding the filament?

      It could also be a case of a blocked nozzle. Though that doesn’t explain the stuck filament. scratch that I just reread your post

      When starting with an unpowered printer, i.e. the first print after powering printer up, does the issue happen at any part of the print, or only after a little while?

      • prenatal_confusion@feddit.orgOPEnglish
        1·
        11 days ago

        Picture works now. It starts immediately

        And no grinding on the filament.

        Edit thr indx upgrade is coming soon so a thorough rebuild is coming too.

        • BigDanishGuy@sh.itjust.worksEnglish
          1·
          11 days ago

          Maybe a rebuild will fix whatever is causing this. Because when you experience:

          1. Stuck filament
          2. Underextrusion

          That does sound like a strictly a failure in the filament movement system. And I can only think of

          1. Grinding extruder, which can also be a symptom of the following
          2. Unstable temperature
          3. Clogged nozzle

          And since clearing the nozzle didn’t work, and you don’t find signs of grinding, nor observe temperature swings, then I’m out of ideas.

          Do you happen to have spare nozzles? Maybe try swapping the nozzle and see if it was still clogged? I’ve had nozzles that I just couldn’t clear.