Re: [ATM] Cutting thread in aluminium

["Don Clement" <clement.focuser@verizon.net>]

I have found that a better way to tap aluminum is to use a forming or roll
tap. This type of tap does not cut, but  forms (forges) the threads. There
are no chips developed using a forming tap so forming taps are especially
well suited for blind holes. Because threads are formed (forged) rather than
cut, the threads are much stronger. See. http://www.balax.com/forming.html
Caution: tap drill size is a larger diameter for a roll tap than for a
cutting tap.



Don Clement

Running Springs, California

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