Z-Probe works!

One of the wonderful items that came with the X-Controller was the Z-probe.

Tonight, I tested it. It worked fine --- and there were only two surprises.

The first was that the default units for the probing seem to be English units.

The second is that the probe's mount for the carriage is not thick enough to make it all the way through my 1/4 aluminum plates. I've updated my model so that the next time I mill a plate there will be a larger, 13mm 6.25mm deep hole for it. For now I can get along without it, because the plug is snug enough for zeroing the Z-axis.