Wasn't the trick to heat it cherry red and then apply sulphur?
On Sat, 4 Nov 2000, c kish wrote:
> We had a thread awhile back and one of the group posted a note about a
> chemical recipe to soften metal in order to drill out a broken easy
> out. He was so kind as to send me a copy and I filed it on my hard
> drive. Well you all know the rest of the story. After a crash it is
> gone and now I am in dire need of it. I am hoping a copy is still out
> there. Any help?? Please.
> in Detroit with many dull and broken drill bits