First layer calibration - the nozzle is too high, and trying to lower it doesn't work (adjusting the Z axis has no effect)
 
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First layer calibration - the nozzle is too high, and trying to lower it doesn't work (adjusting the Z axis has no effect)  

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Isidro Hegouaburu
(@isidro-hegouaburu)
Member
First layer calibration - the nozzle is too high, and trying to lower it doesn't work (adjusting the Z axis has no effect)

I've been using the printer successfully for about 5 months, but recently I started getting prints to fail because the filament was not sticking properly to the plate. I noticed that the nozzle is now too high, so I tried adjusting it by going through the first layer calibration menu.

Everything appears to work ok, but adjusting the value up or down has not effect at all (the height of the nozzle doesn't change -- neither up or down, even though the display shows the numbers going up and down), so now I can't use the printer because all prints fail right away (the filament easily comes off the plate).

I tried installing the latest firmware and didn't help. I check that the PINDA height is still the same (about 1.5mm) as when things were working ok.

Any ideas?

Posted : 16/04/2024 6:28 am
fuchsr
(@fuchsr)
Famed Member
RE: First layer calibration - the nozzle is too high, and trying to lower it doesn't work (adjusting the Z axis has no effect)

How do you know the nozzle is not moving? Try printing a calibration strip such as https://www.prusaprinters.org/prints/105404 and post a picture. I can't imagine why the live z calibration would not make the nozzle change. 

Posted : 16/04/2024 11:59 am
stixpjr
(@stixpjr)
Active Member
RE: First layer calibration - the nozzle is too high, and trying to lower it doesn't work (adjusting the Z axis has no effect)

Is it possible that your nozzle is just so high that you can't tell the difference that the adjustment is making? You may want to follow the guide to adjust the position of your sensor: 

https://help.prusa3d.com/guide/height-adjustment-of-m-i-n-d-a-superpinda-sensor-mini-_1545

Posted : 16/04/2024 11:30 pm
Isidro Hegouaburu
(@isidro-hegouaburu)
Member
Topic starter answered:
I believe the distance is right, about 1.5mm

This post was modified 1 month ago by Isidro Hegouaburu
Posted : 17/04/2024 6:15 am
Isidro Hegouaburu
(@isidro-hegouaburu)
Member
Topic starter answered:
RE:

I tried adjusting the height while this is being printed and nothing happens.... I can't get the filament to stick to the plate.

This post was modified 1 month ago 2 times by Isidro Hegouaburu
Posted : 17/04/2024 6:18 am
evcz
 evcz
(@evcz)
Member
RE: First layer calibration - the nozzle is too high, and trying to lower it doesn't work (adjusting the Z axis has no effect)

If the  pinda is too close to bed you can't adjust properly (max being -2000)

Follow the  pinda calibration guide

 

https://help.prusa3d.com/guide/height-adjustment-of-m-i-n-d-a-superpinda-sensor-mini-_154547

To me that picture looks very close but hard to tell from pictures 

Posted : 18/04/2024 8:23 pm
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