Lower nozzle more than -2.000 (first layer calibration)
I changed my filiment recently from Prusament PLA to eSun PLA+ which clogged in my PTFE tube. After taking everything apart and put back together, I was experiencing poor first layer adhesion and failed prints. When I go to calibrate the first layer it seems like the nozzle is still too far from the bed but the calibration will not allow me to lower it more than the -2.000 that I am currently at. When I try to loosen the nozzle to close the gap, the heater block is loose which doesn't seem right. Any thoughts on how to go about resolving this issue?
RE: Lower nozzle more than -2.000 (first layer calibration)
You loosen the nozzle to get it closer to bed??.. well, I recommend you take hot end apart again and clean it.
If you're at -2.00 with Z-offset and nozzle is still too far from bed, then you should pull up PINDA for about 1mm -and after that execute fresh first layer calibration.
[Mini+] [MK3S+BEAR]
RE: Lower nozzle more than -2.000 (first layer calibration)
If you're close to or above -2, I would reposition the PINDA higher.
The Super PINDA should have about 1.5 mm distance between nozzle and SPINDA, so that you’re around -1 when your Live Z is correct. (For the old PINDA, it was 0.8mm).
Instructions for adjusting the PINDA are in Step 16 of https://help.prusa3d.com/en/guide/how-to-replace-superpinda-mini-mini_179912 (Mini) or
https://help.prusa3d.com/en/guide/how-to-replace-superpinda-mk3s-mk3s_179920 (Mk3S)
I put this little helper on Prusaprinters.org to help position the SPINDA: https://www.prusaprinters.org/prints/57192-spinda-height-adjustment-tool-mounts-into-3030-ext . Works better than zip ties or credit cards, which have less well-defined heights.
For an illustration of relationship of distance of PINDA to nozzle and sheet, see
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/
RE: Lower nozzle more than -2.000 (first layer calibration)
@bogdanh
Did what you said and it's looking much better. Thanks. I had not thought to move the MINDA to adjust the nozzle distance.
RE: Lower nozzle more than -2.000 (first layer calibration)
@eustache ... yes, is not that obvious at first sight (pull up to get closer, I mean). Glad you made it working now 😀
[Mini+] [MK3S+BEAR]
RE: Lower nozzle more than -2.000 (first layer calibration)
If you're close to or above -2, I would reposition the PINDA higher.
The Super PINDA should have about 1.5 mm distance between nozzle and SPINDA, so that you’re around -1 when your Live Z is correct. (For the old PINDA, it was 0.8mm).
Instructions for adjusting the PINDA are in Step 16 of https://help.prusa3d.com/en/guide/how-to-replace-superpinda-mini-mini_179912 (Mini) or
https://help.prusa3d.com/en/guide/how-to-replace-superpinda-mk3s-mk3s_179920 (Mk3S)I put this little helper on Prusaprinters.org to help position the SPINDA: https://www.prusaprinters.org/prints/57192-spinda-height-adjustment-tool-mounts-into-3030-ext . Works better than zip ties or credit cards, which have less well-defined heights.
For an illustration of relationship of distance of PINDA to nozzle and sheet, see
![]()
As someone who purchased my Mini as an assembled kit, and having problems with my satin sheet, I’m so glad I came across this post. Thank you. This should be a sticky somewhere.
Mini+MK3S+XL 5 Tool