I've got some magnetic sensors for mine, but I haven't got around to fitting them yet.
That was another option I looked at but the Mach 3 guide didnt recommend them as the get covered in swarf etc.

However, I am contemplating using a laser with a cross-hair generator on it, and visually aligning to a known point (which would be more than accurate for my needs).
That sounds serious........I think youve been watching too much TV lol


Think I'll start with the home switches and soft limits, and work from there.