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A better M12 ACME form
I had a few test runs with turning ACME form threads
for worms this arvo and I think this is about the best
I can get without a jewelers grinder and microscope for
getting the tool perfect.
At full depth, 10.25mm minor dia the shape looks pretty
balanced. Not perfect but close.
At least the shoulder looks a bit thicker now.
I'll try this as a hob on a blank next.
Steve
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