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PETG fails when other filaments don’t  

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BryceP
(@brycep)
Member
PETG fails when other filaments don’t

I am trying to print with PETG on my MK3S+.  I can print everything fine with PLA and ABS but when I try to print PETG I get a problem where it repeats previous layers leading to crashes and layer shifts.  I have checked belt tension and run full calibration and everything checks out.  Also when it goes and prints the previous layers the count down clock goes back in time.  Please help, I am at my wit’s end.

Posted : 18/02/2026 2:24 am
Diem
 Diem
(@diem)
Illustrious Member

This is odd. In case you have a corrupt preset delete and restore it from the option at the bottom of the dropdown menu.

If problems persist please supply a picture of the issue and save your project as a .3mf file

Files > Save Project as

Zip the .3mf and post it here. It will contain both your part and your settings for us to diagnose.
Cheerio,

Posted : 18/02/2026 11:45 am
1 people liked
BryceP
(@brycep)
Member
Topic starter answered:
RE: PETG fails when other filaments don’t

Update.  It seems to be something with the SD card reader.  I am not having the same issue when using pronterface.  I tried new SD cards but issue persists.  May need to get a new card reader or just continue to print from pronterface 

Posted : 19/02/2026 12:56 am
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