Quote Originally Posted by tonyfoale View Post
What I made is pretty simple and very quick to make. You don't even have to do any calcs. I uploaded a bit of software to do the heavy lifting.
Absolutely intend duplicating your device. I'll cut a paper template to estimate spread of contacts and length needed for indicator stem, though using a depth mic in a reamed hole might help. When I depth radii, a ball or rod makes an ideal seat.
As goal's equivalent of a slip fit, with the saw and running lathe separated by 70 miles, certainty is an issue. There's ways to address a few thou' under by shimming. I'd trust blue spring stock to not gall under load. Over-size not so easily, unless I hold off separating work piece from spud being chucked. The shoe, being so 180° will reject less than correct fit.

Now, as to your software capable of heavy lifting; has it a winch attached?
Lol.

PS to interested readers. All my projects work under same restrictions, need here - power there. And 'need here' are the projects getting my electricity in doors; 3ph 440v. I had caplock mistakenly down for that, which also related in #PH$$).
Lol again.