I’m having a weird issue where the bottom layers of a model is printing fine, but about 30mm or so up the nozzle starts touching the model (you can hear it scratch over the model when it homes for the next layer) and eventually the model is knocked loose from the buildtak and lost.
I’ve tried the following:
- Oiled the rods, and magnets
- Checked the belts and endstops
- Recalibrated (home/height/auto/save)
What could be causing this behaviour?