[modeleng] Re: Broken tap and sulphuric acid
- From: Jerry Kimberlin <kimberln@xxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Tue, 23 Oct 2007 18:03:21 -0700
The common way to dissolve away steel taps, drills etc., from either
aluminum or brass/bronze, is to immerse the workpiece into a hot
saturated solution of potassium aluminum sulphate, which is commonly
called alum. Alum should not be hard to find. It is used in pickling
and canning food items, among other uses. Note that the solution won't
work unless the solution is saturated. It would work cold but would
take forever and a day... Keeping the solution at 60 - 70 deg C is better.
JerryK
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