V-Core 3 - 500 | Bed tilt adjustment is unreliable: the differences in z-height do not converge
During the bed tilt adjustment, the range does not converge reliably, sometimes it only takes 1 or 2 retrys, sometimes upwards of 5 and often it aborts, since the range is increasing.
This issue started appearing over time, and happens both with a hot and a cold hotend and bed; I also already re-tightened the grub screws on the lead screw couplers.
My bed level sensor is a BlTouch, and I am using the rough PEI sheet, if that is important at all.
Anyone got any ideas? Thanks!
6 Replies
have you used
PROBE_ACCURACY to measure what the accuracy is?No, that's an excellent idea. I didn't know about this functionality. Will do try that once the current print finishes (of course now that I wrote a post about it, it decided to work again 😅 )
@blacksmithforlife 🇺🇸 just measured - accuracy (standard deviation) is 0.000959 mm, is that within acceptable range?
yeah that should be fine. So it shouldn't be the probe, but probably something else mechanical
What should I check there, next to the lead screws?
check rail alignment, that your oldham decouplers operate smoothly, hat the setscrew is tightened on the stepper and on the leadscrew, run it up and down by hand and see if there are any hard to turn spots
thanks, will check!