Layer shift
Hi, my upgraded printer has been working daily for a week and delivered beyond expectations... until yesterday where I started an 8hrs print (circular tool holder) and, about halfway, got a huge shift (about 10cm) that I only discovered a couple of hours later when I came back home.
Is there a slicer setup that prevents this from happening? I've read about unticking "avoid crossing perimeters" and disabling "ensure shell thickness" but I'd like to poll the community about what helped people with a longer experience than mine.
Thanks a lot in advance.
PS: my print was using petg, 0.2 speed, textured plate, and the object showed no adhesion problem or warping.
RE: Layer shift
I have seen layer shifts using the don’t cross perimeters setting and stopped using that, my other culprits have been loose belts in combination with default infill and speed profile, then acceleration on longer infills with loose belts seems to trigger stepper skips. Also during the summer I can’t keep temps low enough for PLA and PETG causing the new layer to pick up the lower layer that has not cooled, and eventually the mess may cause a layer shift. This last problem has been with a 0.6 nozzle which may have contributed.
/Anders
Layer shifts are almost always due to head-crashes - sometimes you can work out where exactly the crash was by inspecting the mess and so aid diagnosis.
With new builds and upgrades it's reasonable to expect a few teething troubles as the machine settles down and runs-in; it's unwise to start meddling with settings before the machine is stable. I usually advise a thorough maintenance session after the first month but if this situation repeats it might be worth bringing it forwards.
- and of course there might be something about the particular part that allows the geometry to interfere with head movement - if you suspect this case then save the project, .zip the .3MF and post it here for us to analyse.
Cheerio,