So we watched a video demonstrating how to set zero for XYZ and we are a little confused. X and Y can be set with device at the corner of the material using the small set stops under the BitZero, but to set Z, you have to set the BitZero on top of the material to get an accurate Z zero. Is this correct? We were under the impression that XYZ could all be set to zero with this device in the corner of the material using the small set stops underneath.
If you are only probing for one axis, then usage is as you described.
If you probe for all 3 axes, the X- and Y-axes will be probed first, the machine will lift out of the recess, move over to the probe body, then move down to probe the Z-axis β then the zero is set, it will be adjusted to take the different thickness of the probe body into consideration. See:
So can the BitZero be used to set all three axes for every project, or are there times one or two axes have to be done separately?
If you are using Lower-Left and Top, the 3-axis probe works, so long as stock dimensions and workholding allow the BitZero to be positioned as needed.
For other cases, it will be necessary to probe axes individually.
Even when I use machine bed as the Z I typically let BitZero do XYZ, measure at Bitsetter and then redo Z with paper at the bed. I find that easier than doing X and then Y and then Z even though it wastes a trip to bitsetter.