X layer shifts
My mk3s+ Had minor x layer shifts 25% of the time from day one. Now three months later and many hours spent trying to fix it, it produces catastrophic x layer shifts 100% of the prints.
YES, the set screws on the belt pulley are properly tightened. YES, the rails/bearings are lubed. NO, there is no binding or extra friction when pushing the print head side to side.
I have rebuilt the x axis several times, I’ve tried different belt tensions, and pulley positions on the stepper motor shaft.
I have tried three different spool holders and filament positions.
I have just updated the firmware, and tried two versions of slicer
- The prints usually fail approximately in the same vertical place, but not exactly.
identical code, one failed in the positive direction 5mm at 2mm height, one failed in the negative direction 8mm at 1.7mm
Different code will produce similar failures.
It has to be a defective motor, right? Or power supply? I’m so frustrated I hardly care anymore.
RE: X layer shifts
It is probably mechanical. Check your grub screws and did you lubricate your bearings?
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Chuck H
3D Printer Review Blog
RE: X layer shifts
Another thought is belt tension not checked with the physical tension meter (prusa gcode, requires Prusament PETG to get a good meter)
RE: X layer shifts
Adding onto Dan Roger's post. I also had a similar problem and the belt tensioner tool is much more reliable than the automated belt test. Even if you are between minimum and max on the belt tensioner tool, try to get your belt tension EXACTLY in the middle of the max and min.
That was my main issue with the messy x-layer shifting, and just tightening the belt a little to get in the middle of the scale got rid of most of my issues.
https://www.prusaprinters.org/prints/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus
RE: X layer shifts
turn off "crash detection"