Small Y layer shifts
Hi,
Recently my MK3S has started layer shifting in the Y direction. The shift is always in the same direction, and can happen once or a couple of times during a print, usually in the same layer, doing a specific movement.
The shifts are accompanied by a clunk sound, and it sounds the same as when steppers are powered on and thus clunk into position. I will be able to hear this sound during printing and know that a shift has occured.
The shifts are small, 0,5mm-1mm.
This is happening under specific circumstances. I am printing some parts with 6 top and bottom solid layers with 4 perimiters and 60% grid infill. I have succes printing other prints where all of these values are lower (standard settings)
Anecdotally it seems to happen when an operation has been finished and the printer accelerates to rapid speed. The clunk sound will then be emitted, almost like the stepper driver was disabled and then enabled, locking the stepper into position and then accelerating.
Things i have done;
XYZ calibration, belt test etc.
Adjusted belts and bearings tighter or looser.
Retightened pulley.
Read a lot of threads on this forum regarding layer shifts, but perhaps not all.
Printing is done through octoprint. I have not tried SD yet.
I will gladly share the gcode or stl files if permitted.
RE: Small Y layer shifts
Check that your filament is feeding and not binding. Some movements can cause the spool to feed filament, and then back-feed filament up past the spool - and you get loops on the spool that are loose. Keep that up and mid print the loop binds, and pulls on the head.
RE: Small Y layer shifts
Im using a bowden tube between the extruder and a 2 kg roll of filament for that exact reason. Mind you, this would be relevant for the X axis. My layer shifts are from the y axis.