Reply To: Trouble starting gcode with my new MPCNC

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Matthew Kennedy

Are you manually moving the carriage in between cuts, and zeroing out at home? If repetier/pronter thinks the carriage is away from the intended starting point, it’ll truck along in a straight line to wherever it thinks it should be. Even in relative positioning mode, it should be remembering that relative origin.

Your current Gcode starts off with a G90 (absolute positioning) and then:
G00 X0 Y0 Z0 (move to last set home)

I would expect your starting gcode to roughly say:

G91   ; Relative postioning mode
G92 X0 Y0 Z0  ; Set that we are currently home, all measurments are from here.
G00 ....  ;  Your first move

Then the Gcode should go off as planned, unless I’m way off base.

Hope this helps,


–Edit, I think I understand your desired behavior better.