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Old December 26, 2008, 09:10 AM   #1
Brian Albin
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Acme Taps

I have always thought of Acme threads as being lathe cut, but I see here http://www.tapcousa.com/?gclid=CK_gz...FQkiagodD3YlCg
that taps are made for cutting Acme threads. Have any of you cut Acme threads with a tap? How well did it work?
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Old December 26, 2008, 10:18 PM   #2
Unclenick
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About like any tap, except they are removing more material out at the major diameter, so the taper onto the cutting threads has to be gradual. Strictly for through-hole tapping, for that reason, unless you don't mind a blind hole with unusable extra depth.
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Old December 27, 2008, 12:52 PM   #3
Brian Albin
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Thanks.
I always like learning new things.
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Old December 27, 2008, 06:04 PM   #4
Unclenick
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I suppose I should add that they could be made with less taper in steps to create a bottoming tap, but I've never seen them. That doesn't mean someone doesn't do it, but I expect it would take additional steps and I'm not sure what need there would be for such a thing?
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Old December 28, 2008, 01:37 PM   #5
Brian Albin
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No. I think of Acme threads on the lead screw of a lathe, or the receiver mating of a rifle barrel. No blind hole usage comes to mind.
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