@Stephen6309 said in z probe offest:

@way2lo2 Not sure, but I do know the firmware won't go below Z0, if you have your M208 set Z minimum to 0.

That's right. So on the first layer the most you can baby step down by is the first layer height.

For best results the probe trigger height must be accurate. Set it at the same point you use for homing. And use that same point for setting Z0 before generating a heightmap or after doing tilt correction.

If you do need to baby step down consistently you can use the amount used to modify the G31 trigger height to make it permanent.

Setting the M208 Z minima to -0.5 would let you go a bit lower, but use that with caution.