Is there a way to compensate bed heights after a calibration?



  • For whatever reason the front of my Kossel *Front when looking at it" the bed seems to be lower than the rear. Now I don't know why the auto calibration doesn't fix this and after adjusting my 1st layer height a ton of times one side will be to low and the other will be perfect.

    When I do a read out of M666 this is what I get.

    M666
    Endstop adjustments X0.05 Y1.02 Z-1.07, tilt X0.00% Y0.00%

    now I don't know why X is 1mm out of proportion than y and z is -1 than the rest but I thought that shouldn't matter with the G32?

    Is there any way I can compensate my Y tower portion of my bed to get better adhesion there? for the parts I'm printing it is pretty important I get a solid 1st layer because they're for my Etsy page and they need to accept 608 bearing, so the hole needs to be pretty accurate.

    I don't know if this will make any difference, but here is my bed.g

    The printer is a Kossel vslot 250 bse from Ultibots.

    ; Auto calibration routine for delta printers
    ; Before running this, you should have set up your zprobe Z offset to suit your build, in the G31 command in config.g.

    ; About the G30 S parameter
    ; Used to specify what calibration computation to perform.
    ;
    ; S=-1 Don't adjust anything, just print the height error at each probe point
    ; S=0 Equivalent to S=
    ; S=3 Adjust homing switch corrections only
    ; S=4 Adjust homing switch corrections and delta radius
    ; S=6 Adjust homing switch corrections, delta radius, and X and Y tower position offsets
    ; S=7 Adjust homing switch corrections, delta radius, X and Y tower position offsets, and diagonal rod length

    M561 ; clear any bed transform, otherwise homing may be at the wrong height
    G31 X0 Y0 ; don't want any probe offset for this
    G28 ; home the printer

    ; 13 points, 6 factors, probing radius: 100, probe offset (0, 0)
    G30 P0 X0.00 Y100.00 Z-99999 H0
    G30 P1 X64.28 Y76.60 Z-99999 H0
    G30 P2 X98.48 Y17.36 Z-99999 H0
    G30 P3 X86.60 Y-50.00 Z-99999 H0
    G30 P4 X34.20 Y-93.97 Z-99999 H0
    G30 P5 X-34.20 Y-93.97 Z-99999 H0
    G30 P6 X-86.60 Y-50.00 Z-99999 H0
    G30 P7 X-98.48 Y17.36 Z-99999 H0
    G30 P8 X-64.28 Y76.60 Z-99999 H0
    G30 P9 X0.00 Y50.00 Z-99999 H0
    G30 P10 X43.30 Y-25.00 Z-99999 H0
    G30 P11 X-43.30 Y-25.00 Z-99999 H0
    G30 P12 X0 Y0 Z-99999 S6

    G1 X0 Y0 Z150 F15000 ; get the head out of the way of the bed


  • administrators

    It sounds to me that your Z probe trigger height is varying with XY position. See https://duet3d.com/wiki/Calibrating_a_delta_printer.


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