Help , prusa m3  

RE: Help , prusa m3

Posted by: @roman-dembitskyy

I'm new to 3D printing, when printing 2 layers it begins to fray and tear. and then the part breaks off. help determine what the problem is. nozzle 0.4, temperature 260/85, print with petg filament,

RE: Help , prusa m3

Looks like wet filament.

Z height could also be too low but impossible to say for sure until filament is dried.

Dry the filament and then do a first layer calibration print and post a pic of it ‘on the bed’ back here so folks can evaluate from there.

Cheers

RE: Help , prusa m3

What kind of printer do you have, the pics do not look like an original Prusa MK3(S+). Did you build it yourself? Did it ever print successfully?

Did you do the preflight check: https://help.prusa3d.com/guide/9-preflight-check_76792 and the recommended calibrations?

As Randy wrote. Post the rectangle from your last first layer calibration. Also: Start with fresh, quality PLA filament. It's most forgiving, if you got that to work, try PETG or whatever you like...