On Sun, 15 Apr 2012 10:58:13 -0700 (PDT), wrote:

On Apr 15, 10:37*am, rangerssuck wrote:


I've read in several places that alum works wonders for disolvin taps
in non-ferrous metals. Haven't tried it yet, but here's some reading:http://www.homemodelenginemachinist....hp?topic=270.0

I have read that aluminum sulphate also works. You can get the
aluminum sulphate at garden centers. It is used to make soil more
acid.

Dan

I've used it. A cold solution didn't seem to do anything. Even when
kept near boiling it's still a slow process (hours); but it got the job
done without damaging the part I was working on.

Bill
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