If you’re not using a probe, use this starting gcode instead:
G21
G90
G94
G92 X0 Y0 Z0
G1 Z10 F900
G00 X0.0000 Y0.0000 Z0.0000 F2400
G00 Z5.0000 F900
Notably that G92 X0 Y0 Z0 is going to set zero at the current XYZ position.
1 Like