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tmac1956
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David/Bob:

The part came out great! I had a little trouble dialing it in but with david’s advise and some patience I finally got center. Based on Bob’s suggestion I was able to clamp the sphere on the flats of the existing hole – shiming up under the shaft. This enabled me to pull my parallels back out of the way. Just to be safe, I placed another piece of key stock between my vise and the drill bit. I don’t have much luck with the manual stop and I usually forget to set the thing before I get things set up anyway.

So… here are some pics of my “work…”. It’s the poor man’s timing machine that I’ve been playing with.




I think I need to put a little divot in the BigBen crystal that I’m using – probably need a small diamond drill.

Thanks everyone!
Tom

tmac1956Reply To: Machining question…