Is anyone else having HORRIBLE problems with their Prusa Mk4 or Mk4S first layer quality…

My mk4s developed a problem that Prusa spent 3 months troubleshooting with me where the first layer is being laid down too close, and so filament blobs, then prints fail.

Eventually, they advance replaced my whole printer, and the new one had the exact same problem out of the box…

I managed to find a bug that was raised on github for this exact issue, with 22 other people registering “mee too” for the issue…

I’m just looking for some feedback from the wider community to see if any others have hit this problem?

  • snrkl@lemmy.sdf.orgOPEnglish
    2·
    1 day ago

    I can get adequate results with Zoffset or LiveZ +0.04 with smooth sheet and PLA.

    PETG is still variable results for same settings, z+0.01 is ok some of the time, others it is still terrible, and still sees filament build up, so if printing real things, it eventually blobs, and has a (bedArea - printArea) chance of then causing a collision.

    +0.02 means no bed adhesion, and I can’t actually get a finished first layer.

    • einkorn@feddit.orgEnglish
      1·
      1 day ago

      I’ve never printed with PETG, so I can’t help you there, but I heard it’s a pretty difficult material to get right.