In article ,
Doctor Evil wrote:
"You heat the pipe with a powerful blowtorch (best use two) until "cherry
red" and then quench it in water. It has to be cooled immediately."

Go back to being the international man of misinformation. It suited you
better.

What's your doctorate in? Certainly not metallurgy.

--
*Gravity is a myth, the earth sucks *

Dave Plowman London SW
To e-mail, change noise into sound.