Kit,
I use two different copies of UCCNC. My router uses the latest version - but that machine does not have any probe on it so I've never investigated. My mill is running the previous version of UCCNC and does have a fairly crude-but-effective 3D touch probe which I use a lot. I use the out-of-the-box UCCNC probe routines and I agree that they are not very intuitive. All I can say is that I have discovered the mystic incantations to make it work - simple Z probe, edge-finding, find the centre of the workpiece - and it does what it should reliably. But trying to relate what is written on the screen buttons to what they actually do was a voyage of adventure and exploration! I have not updated the mill to the latest UCCNC version as I have a few self-written macros to do with tool-setting which involved creating a new screen. For example, on tool-change the machine automatically goes to the tool height sensor to set Z zero, and I have no idea if the updated version is going to work with my screen.

Now you mention this, I'll take a look at the probing screen in the new version and if it is sufficiently similar to the previous one that I use daily, I'm very happy to go through the basics here. The documentation really does not add anything - everything I know about it has been found by experiment.

- Brian