The machine won’t cut to the correct depth. Cutting to shallow. Does anyone know or have some ideas to calibrate it to cut to the correct depth?
First you need to establish that the Z-axis move the correct distance, do a 50mm jog = exact 50mm travel? (Verifying that $102 GRBL parameter, step/mm value, for Z is calibrated)
Reasons for discrepancy are plenty, but all bets are off if the step/mm value is off.