"Baron" wrote in message
...
Ed Huntress Inscribed thus:

Here's a thought to keep in mind for the future. It's the way that
gunsmiths annealed spots on (case hardened) '03 Springfield
receivers,
for drilling to mount a scope.

Ed Huntress

Interesting technique, I'll have to remember that one !
Best Regards:
Baron.

A variation is to anneal the spot with a red-hot iron dipped into a
drop of solder.