How to change individual z settings

Snapmaker 2.0
1

Hi,

I manually calibrated my bed and everything was fine until I came to do a large print. Doing a test print I noticed that the Z height settings are off for the row closest to the front of the printer - J0 / I0-I6

Does anyone know the console command to alter those points individually?

Thanks

2

Verify the mesh coordinate by moving the head to it using G42 Ixx Jyy

Then modify the mesh value location at coordinate I, J by adding the offset Q using M421 Ixx Jyy Qzz.

Test, and when you’re happy, save to EEPROM with M500.

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3

@brent113

Thanks for this. Really appreciate the assist.

Cheers!

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4

Good to know. I just was doing this after a manual calibration of a glass bed (went okay, some caveats I may document regarding the mounting method). I skimmed the Marlin gcode list and was using G29 to write the point for a bilinear mesh, instead of M421.

But G42 was the command I missed in my skimming: that would have sped things up a bit :slight_smile:

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