You were only a clear as you often are in your generally vague posted
questions.

I admire a lot of the interesting and metalworking-related things you've
shared with us/this group, but this question is not clear.

I know from experience that many of the useful properties of a clean piece
of copper are completely destroyed when the useful copper item is heated to
red heat.

--
WB
..........


"Ignoramus21198" wrote in message
...

I was clear and I do not care about your insinuations.

i