Z Axis Calibration failing
My Mk4 suddenly started failing it's Z axis calibration - when I started my most recent print, instead of tapping the build plate, it rammed the nozzle down so hard I thought it might actually bend the plate, and then started grinding the stepper motors in an effort to push it further through. I reran the calibration, including the load cell thinking it might have gotten out of whack. The load cell failed repeatedly until I took the nextruder apart and reassembled it, then it started passing again. But even with the load cell working, the Z axis calibration just rams the nozzle into the print bed and keeps trying to force it through. Do I have a bad load cell? Or is something else going on? The printer has been working fine for about 6 months, in fact it just finished a print which worked perfectly, then this problem.
RE: Z Axis Calibration failing
Hi. I'm having this problem now. Did you get a fix?
RE: Z Axis Calibration failing
My 4Ks just started this. I have several indents on my build plate. Load cell test fails and z test fails when nozzle smashes into build plate. Any suggestions?
RE: Z Axis Calibration failing
It definitely shouldn’t be forcing the nozzle into the plate like that. Even with recalibration, that behavior suggests the load cell isn’t triggering. I’d verify the cables and maybe try a factory reset.