Center probing with spindle rotation

[Derek]

I made a power drawbar for my Bridgeport based on Ray Livingston's design. It uses a stepper motor and a gear reduction to tighten and loosen the drawbar bolt. It runs as B axis. Terry wrote a find center of hole macro that rotates the B axis as it's probing so that it's always contacting the probe in the same direction. Works like a champ.

Thanks Terry!.

https://vimeo.com/254669252