3 Z motor leveling with IR sensor clarification



  • So a couple questions using 3 Z axis motors for first time and the IR sensor for the first time.

    So you run G32 to run the probe to probe the 3 different points on the bed and I see the window popping up
    G32
    Leadscrew adjustments made: -0.308 -0.097 0.438, points used 3, deviation before 0.206 after 0.000

    1. So does that mean it actually moved the 3 motors independently and leveled the bed? So if I run it again it should be closer to zero the next time? or is it just going to compensate during a print later

    2. Do I need to add G32 to my print start code in Cura? Or somewher ein my gcode? like under homez.g to do that every time it homes the printer?



  • Hi,

    You should run it a few times because that 0.000 is theoretical.

    You can invoke G32 at the start of every print if you want or you can do it every time you home or you can just do it manually as you think it is needed. Your preference. No right or wrong answer.

    I am currently doing it manually to see if the bed remains level once adjusted.

    As to mesh compensation that is a totally different process - see G29.

    Frederick



  • @57buick said in 3 Z motor leveling with IR sensor clarification:

    Leadscrew adjustments made: -0.308 -0.097 0.438, points used 3, deviation before 0.206 after 0.000

    did you follow the guide?
    https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors



  • @Veti Yes I followed the guide to set it up.


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