[modeleng] Re: Broken tap and sulphuric acid

Kevin,

First, put the whole contraption in the freezer.
Then when frozen, take a solder iron, and apply to the remains of the 
tap only.
Repeat a couple of times, the tap will become less lodged in the 
casting, but patience will be needed.
The H2SO4 solution, is in my opinion, an absolute no-no!
Patrick
kevin.osborn@xxxxxxxxxxxxxxx wrote:
> I have broken the end of tap in a phosphor bronze casting, and I have
> heard a rumour that a couple of drop of sulphuric acid will dissolve the
> tap. Is this correct? And if so where can I buy / get a small quantity.
> I have been offered 25 litres, but cannot get anything smaller.
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