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Mini Bed Level Correction  

Eminent Member
Mini Bed Level Correction

I had some issues with the first layer not being good at different parts of the printbed, tried the bed leveling test with all the squares only to find out that the Prusa Mini does not have the "Bed Level Correction" feature?

Is there a way around it (without a RPi) or is there something known about implementation of this feature in the firmware?


Posted : 22/03/2021 4:57 pm
Active Member
RE: Mini Bed Level Correction

Hi, I probably have same issue. In my case I have Z offset set to -1.500 and left side to middle is perfectly squashed, but for middle to right side I need at least -1.560 to be squashed and not full of holes.
I tried all checks and nothing helped and setting Z offset to -1.560 ruins left side texture.
Is there any way how to fix it or modify G29 command to solve my issue? I tried "G29 P8;" in prusaslicer but it still did only 4x4 probing and not 8x8.

Prusa Mini+ Preassembled
Smooth pei
fw 4.3.1

Posted : 03/04/2021 8:31 pm
Estimable Member
RE: Mini Bed Level Correction


probably the XZ skew is not perfectly adjusted. have a look here

G29 can be improved by changing the num of probes within the firmware but if the printer is skewed it won't improve the result.

loading here the G29 result allows You a visual shot of Your bed.

Posted : 04/04/2021 9:55 am
mechedd and Eskarik liked
Active Member
RE: Mini Bed Level Correction


Thanks a lot, it was it. I expected it would compensate automaticly for even biger sag than 4 or 5 mm which I had.
I still have some issues with perfect first layer but now it is probably more about nitpicking.

Posted : 11/04/2021 10:12 am