3 axis CNC touch pad

Ideally this would be made out of aluminum, but I'm sure you could get away with 3D printing it and either painting it with a conductive material or even adding a layer of foil to the outside.

Once made, you would just need to find a position that works best for you and install a screw to help ground the touch pad and the machine together when doing probing jobs.

(MEASUREMENTS IN METRIC)