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cannot calibrate XYZ  

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dogulas
(@dogulas)
Active Member
cannot calibrate XYZ

When I try to calibrate the XYZ option, it states that if it catches the paper to shut it off immediately.  However, it catches the paper every time and doesn't say what can be done about it.

What should I do to correct this?

Posted : 24/01/2022 9:36 pm
Milos V.
(@milos-v)
Prominent Member
RE: cannot calibrate XYZ

If it really catches and moves the paper pushing it to the bed, try to put PINDA a bit lower. Distance to the bed is defined by the PINDA probe. When it is too high comparing to the nozzle end, nozzle starts to touch the bed. Recommended difference between nozle and PINDA is roughly 1mm. It requires just a small move, 1mm can be still fine, 1.1mm can be too much. In fact, distance between the nozzle and the probe should be as big as possible, it just can not touch the bed. During the build the distance is determinated by the thickness of the zip tie. That is a good help, but not really very accurate.

Posted : 24/01/2022 10:41 pm
Lynn
 Lynn
(@lynn)
Trusted Member
RE: cannot calibrate XYZ

I agree with Milos.  Lower the probe just a little and retry

Posted : 25/01/2022 12:38 am
dogulas
(@dogulas)
Active Member
Topic starter answered:
RE: cannot calibrate XYZ

Thanks guys.  I loosened the probe screw and lowered it by two threads.  Now when I try to do a first layer calibration, I get all the way to -2.0 and it is still too high.  I'm going to try backing the probe up by one thread and see if that helps.  Or, in your opinion, is it OK to exceed the recommended limit of the first layer calibration?

Posted : 25/01/2022 1:36 pm
Milos V.
(@milos-v)
Prominent Member
RE: cannot calibrate XYZ

The number is not such important, but in such a higher values, the problem is that the probe is almost in the same height as the nozzle. This could be harmfull for the probe. During print sometimes edges of the printed object warp, goes higher than the rest of the print. It happens that nozzle "crash" into these, but nozzle is hot and usually goes through. But PINDA not. So if PINDA hits the top of the print, it can damage PINDA or remove the printed object from the bed. Both can be dangerous for the printer. So it is good to keep the distance between PINDA and nozzle as big as possible. The limit is when the nozzle hits the bed during calibration or bed leveling. So I would move it a bit back in your case.

Posted : 25/01/2022 10:15 pm
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