An Analog Electronic Edge Finder

[rgsparber]

Claudio HG,

Your comments are immensely helpful to me. I have updated the article including adding you to the acknowledgment section.

Please let me know if I missed anything or created any new confusion.

A 1/8" diameter 1" long hardened steel dowel pin can flex a few thousandths of an inch yet spring back. This is more than adequate. During the touchdown process, I start about 0.01 inches from the reference surface and advance the probe 0.001 inch at a time for a rough touchdown. Then I back out about 0.002 inches and advance again 0.0001 inches at a time for the final touchdown.

Thanks for your help.

Rick