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Posted to rec.crafts.metalworking
jim n judy
 
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Default Help with internal threads for 5c collet holder

Come on, you're a machinist, right? Do just a little shop math.
Thirty seconds
of trigonometry and a few button pushes on a calculator......


Thank You. I have "run the numbers" and I also checked my Handbook BUT
the drawings that came with the casting kit say a bore of 1.175 hence
my dilemma. I just wanted to check with others before turning this
piece.