[ErrieKruger]

Tom - I ordered a Mitotoyo micrometer . I have 3 micrometers , but the only one in the 0.001 mm range is limited to 25mm diameter.

I said before that a specialist will do the machine work , but I want this to be a hands-on project. If I just write checks and keep my hands clean , I miss the purpose of this venture.

It would have been much easier ( and less expensive ? ) to simply buy a Porsche.

This forum motivated me. At this stage I am spending 10% of my time doing something , and 90% reading.