Have some more footage posted on YouTube here

Have temporarily given up trying to get my proximity switches to work :-( so using soft limits for now.

Question: I now have to tram the spindle head. I have a dial micrometer and a sheet of 10mm plate glass. Do I need to level the glass in absolute terms, then tram against the glass or just tram against the glass so that the spindle is correctly aligned relative to the glass?

Advice appreciated.

Thanks
Mike