Print shift
I need help. I don’t understand why this print shifts. I printed two with no issues and printed two that essentially did this. Didn’t change anything. Running a Prusa MK4S using dried PETG, 240C hot end, 85C bed, 0.6 nozzle. These are lab glassware drying rods. Why is the printer shifting suddenly? Print orientation is like the first pic and nothing was changed with the print file. printer did this not long ago with a different print job…printed normal, then shifted, then reprinted normal.
Those marks on the undersides look like fingerprint patterns of less than perfect adhesion: a thorough print-sheet clean might be enough fix.
Cheerio,
RE: Print shift
That problem may go away if you print with a brim.
Personally I use spray adhesive on every print even though most will probably never need it - it costs nothing but basically rules out a common and catastrophic failure mode.
"Thorough cleaning" for possibly unknown contaminants may be in comparison a much more difficult task.