Any ideas or thoughts on making a edge finder come touch off tool

[Doddy]

I'd be interested in your results - if you can post a follow-up. I'd be slightly concerned with using Ali for the insulating properties of it's oxides (in normal use you'd nickel plate Ali for electrical contact work) - but I'd listen to experience over theory on this any day.

[Sterob]

I'd be interested in your results - if you can post a follow-up. I'd be slightly concerned with using Ali for the insulating properties of it's oxides (in normal use you'd nickel plate Ali for electrical contact work) - but I'd listen to experience over theory on this any day.

Good point Doddy. I just assumed it would be ok as the chinese z gauge I'm using is the same. Will jump that hurdle when I come to it.
I see Avid CNC use a Brass plate...maybe for the reasons you stated.
It will be a while before I tacke it as we are moving house soon.

Steve