PINDA Probe Issue – Left Rear Corner of Smooth PEI Sheet Not Detected
Hello everyone,
I’m facing an issue with my Prusa Mini printer and would appreciate your help. Here’s what happened:
I started a print, but unfortunately, there was a silica gel packet left on the smooth PEI sheet. During homing, the nozzle crashed into the left front corner of the bed. Since then, the printer doesn’t detect the left rear corner of the smooth PEI sheet anymore. Interestingly, the satin and textured sheets still work perfectly fine.
What I’ve observed so far:
Smooth PEI Sheet: The PINDA probe doesn’t trigger on the left rear corner, and the printer continues moving as if nothing’s there. This prevents mesh bed leveling on the smooth sheet.
Other Sheets: The satin and textured sheets are detected correctly, even in the left rear corner.
Heatbed Condition: The heatbed looks flawless, and while the smooth sheet has some wear and tear from past prints, it has always worked reliably until now.
Calibration Tests: I tried manually checking if the printhead could detect the bed on the smooth sheet, but it didn’t work. However, the other sheets are detected without issues.
Temperature: The heatbed was at a maximum of 60°C.
Firmware: The printer’s firmware was updated recently.
Questions:
Could the crash have permanently damaged the smooth PEI sheet or affected the PINDA probe?
Should I recalibrate the PINDA probe specifically for the smooth sheet, and if so, how?
Are there any additional tests or steps I should take to identify the root cause?
If I’ve missed any important details, please let me know. Thank you in advance for your support!
RE: PINDA Probe Issue – Left Rear Corner of Smooth PEI Sheet Not Detected
What happens if you place a thin steel sheet in that corner say the size of 20x20x1mmor thinner - will the pinda detect it?
See my GitHub and printables.com for some 3d stuff that you may like.
RE: PINDA Probe Issue – Left Rear Corner of Smooth PEI Sheet Not Detected
first: I asked myself IF I own something like that.... Than I realized yes...
The thing is, that the other steel plates could be found.... Same here: I layed two 2 Eurocents on my bed on in the front where the homeming is done and one in the rear corner. Both where at z=0 found. I homed the printer on the coin in the front corner and moved the printhead with the software at the second position where the sonsor found the second coin exactly at z=0....
THAT's what I suppose to be strange... I will check if here is someone with a Mini to check my Bed on an other printer.
RE: PINDA Probe Issue – Left Rear Corner of Smooth PEI Sheet Not Detected
I have been having a similar problem that started a while ago, and continued intermittently until today.
I can no longer get past the mesh bed leveling stage of a print. The second test point (rear left) is not detected and the printer crashes the nozzle into the plate.
The strangest part of my issue is that there is no problem with mesh bed leveling when it is performed from the menu! It only fails when I try to start a print. Both my slicer software and printer firmware are up to date. I tested the pinda and it functions reliably in the rear left corner.
RE:
I am having a similar problem and I was able to get it to work correctly once by flipping the sheet over. Is it still the back left corner even if you flip the sheet? Or is it consistently the same no matter the orientation of the plate?
RE: PINDA Probe Issue – Left Rear Corner of Smooth PEI Sheet Not Detected
Strange because I also find the rear left difficult at the moment to get a good Z height....
I was recently considering messing with Bed Level Correction to compensate for this.
RE: PINDA Probe Issue – Left Rear Corner of Smooth PEI Sheet Not Detected
Sooo seems to be that I'm not the only one with that trouble....
I just saw that here occurs some other's with issues....
I wanted to test my bed if it's my Printer or my bad but I did not yet come to test it at the moment....
Also because I don't know any other local user with a Prusa Mini so far....
So I tried the Issue if it is a specific side of the plate: no, it's not. It occurs on both sides and both times it fails at the rear corner of the other side of the power supply cable.