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?

  • roofuskit@lemmy.worldEnglish
    0·
    2 months ago

    If this is a core one you should be asking Prusa, not because we can’t or don’t want to help, but because that’s part of the price of the printer. And they will have a much better idea of what is wrong.

  • BigDanishGuy@sh.itjust.worksEnglish
    0·
    2 months ago

    Without knowing what printer you have I offer this advice:

    Does your printer keep the temperature? I had a creality cr6 that underextruded and in my case it was bad capacitors on the heating element circuit.

      • BigDanishGuy@sh.itjust.worksEnglish
        0·
        2 months 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
          0·
          2 months 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.

  • squaresinger@lemmy.worldEnglish
    0·
    2 months ago

    How about your filament path? Is there high resistance? The filament roll, is it hard to roll on your filament holder? How about reverse bowdens?

    Is the extruder gear too tight or too loose?

    • daannii@lemmy.worldEnglish
      0·
      2 months ago

      I found that new rolls seem to not want to unroll as easy because of the weight. If I have this problem, it’s usually on a new roll.

      • WFH@lemmy.zipEnglish
        0·
        2 months ago

        A low friction filament path solves a lot of under extrusion issues. See if you can build a filament holder with ball bearings and/or a filament guide before the extruder. It solved all my issues with my former Ender 3.

  • Erusset@slrpnk.netEnglish
    0·
    2 months ago

    That (or something like it) happens to me with some bad filament. It gets stuck in a blob inside the printer head between the hot end and the gears pulling in the filament.

    I have to take apart the printer head and pull the hardened blob out. I actually have to do it now.