Re: [CAD_CAM_EDM_DRO] Lighted edge finder

Jon Anderson wrote:

>
> If made as the commercial units, yes. A simple dowel pin, led, battery,
> some wire and an alligator clip will do the same thing.

How would you do that? It seems to me either the workpiece or the
spindle must somehow be insluated so you can close that connection to
make the led glow. I assume the commercial ones have the battery in the
center, with one end connected to the spindle, The other end 'grounds
out' when it hits the workpiecee.

I like my old 'top hat' style edge finder. It makes a clean jump right
at the point of contact, and Im sure there is no deflection of the
finder.

ron