I’ve got an Ender 3-pro with cr-touch and plastic washers instead of springs. I sanded down the washers to manually level the bed to var of 0.372.
When I adjust the z-offset it prints great but I need to adjust it before every single print. It stays within a fairly narrow range, -1.11 to -1.37 but if I don’t do that adjustment, the print usually fails.
I preheat the bed and nozel before adjusting it. None of the screws seem to be loose. The nozel doesn’t jiggle around. I tightened down the screws for the z-actuator.
What else could I be missing?
@prismo I just did some more checks. If I adjust the z-steps to paper height I can put it out of alignment by pushing the right side of the gantry arm up or down. There obviously isn’t perfect synchronization between the left side (where the drive screw is) and the right side (where it’s just pulled along by the rest of the gantry).
I’m gonna play around with the eccentric nut and some grease to see if I can get it consistent and report back.