Layer Shift problem
I have 2 unit of MK3S, both were bought 10 weeks ago and they both have clocked 50 days printing time each.
One of the unit is facing layer shifting issue (X-axis) lately even after numerous calibration.
Anybody know how to fix this issue?
RE: Layer Shift problem
Dry bearing is one cause. Did you pack the bearings with grease before installation?
Overly tight mounts. U-bolts need to be "just tight enough" and a 1/4 turn too much will deform and cause shifts. Similar effects are seen with the MK3S extruder parts being undersized and crushing the bearings.
The part being printed looks to have areas where part curling will happen. When printing sparse solid infill care must be taken to ensure the printer allows the plastic to cool properly before laying down the next layer.
And cable snags. Make sure your cable harnesses have nothing near them that will tug on the cable as it moves.
Since it appears the X is what is dragging, try loosening the extruder screws that clamp the bearings. A half turn should be enough. Also, test moving the extruder side to side. Any rough spot or stickiness must be resolved. You can check the "belt tension" numbers, they show drag. Lower numbers are higher drag; 260 or above is best (and they mean nothing about belt tension, so ignore that aspect).