Unable Perform First Layer Calibration Lower than -2.000 mm
Hi Everyone,
I am new to Prusa Forums but I have owned a Prusa Mini+ for about 6 months (and I love it!)
However, the bed has gotten a bit unlevel.
I am trying to perform the First Layer Calibration, yet I am unable to make the nozzle go down lower than -2.000 mm, even though it probably needs to go to about -2.100 mm for a good first layer.
Please Help!
Thanks in advance,
Caleb
Caleb
RE: Unable Perform First Layer Calibration Lower than -2.000 mm
good morning Caleb,
you need to readjust your pinda.
reset live Z to zero, (to prevent damaging your build plate) slacken the pinda clamp and lift the pinda one thread (1.0mm), re tighten the Pinda, and re adjust live Z
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Unable Perform First Layer Calibration Lower than -2.000 mm
If you’re close to or above -2, I would reposition the PINDA higher.
May sound counter-intuitive to move the PINDA higher, but by doing so the nozzle can move closer to the print bed before the PINDA triggers. For an illustration of relationship of distance of PINDA to nozzle and sheet, see 
The Super PINDA should have about 1.5 mm distance between nozzle and sensor, so that you’re around -1 when your Live Z is correct. That gives you enough wiggle room up and down.
Instructions for adjusting the PINDA are in:
Mini: https://help.prusa3d.com/en/guide/how-to-replace-superpinda-mini-mini_179912
Mk3S: https://help.prusa3d.com/en/guide/how-to-replace-superpinda-mk3s-mk3s_179920
I put this little helper on Prusaprinters.org to help position the PINDA: https://www.prusaprinters.org/prints/57192.
Works better than zip ties or credit cards, which have less well-defined heights.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Unable Perform First Layer Calibration Lower than -2.000 mm
Thanks for all the replies!
It was very helpful!
Thanks again,
Caleb