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PETG and Raft/Support turns into a gummy carpet 🙁  

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s-p-s
(@s-p-s)
New Member
PETG and Raft/Support turns into a gummy carpet 🙁

Hi.
I'm having big problems printing in my favorite material, PETG.
Whenever I'm using support or rafting layers, the lines just ends up as a big carpet-like mess. Leaving the printer unattended results ini the nozzle eventually picking up the carpet and later crashing.

at first I thought that I messed up some settings, but after several attempts, I did a full factory-reset did a full calibration and returned to prusas default slic3r-settings. Still no luck.

I'm using these settings:

  • Printer Settings: 0.20mm FAST MK3 (just added 10 raft layers for testing)

  • Filament: Prusa PET

  • Printer: Original Prusa i3 MK3

  • Fill: 20%
  • I have tried with:

  • Off-brand PETG

  • Prusa PETG, white

  • Prusa PETG, black
  • Also tried a bunch of different slicer-settings, but still no luck 🙁

    Hope that someone can help me.
    Thanks
    \Søren

    Posted : 11/11/2018 6:21 pm
    TomVe
    (@tomve)
    Active Member
    Re: PETG and Raft/Support turns into a gummy carpet 🙁

    From you picture it looks like the skirt is a bit too squished, which indicates that your Z distance is too small. PETG likes to be "laid" on the print surface instead of being flattened into the surface like PLA. My own Live Z Adjust setting for PETG is 0.050 higher than for PLA.
    Could you try raising the Z distance a bit?
    Also why use raft in the first place, when using the nice PEI surface?

    Posted : 13/11/2018 8:10 am
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