On Mon, 29 Apr 2013 18:50:31 -0700, pyotr filipivich
wrote:

Gunner Asch on Mon, 29 Apr 2013 12:02:13 -0700
typed in rec.crafts.metalworking the following:
On Mon, 29 Apr 2013 12:10:27 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

"Stormin Mormon" fired this volley in
:

Too much feed pressure. When you're almost
through, use very, very light feed pressure.

If he's drilling #304, that's an invitation to smoke the bit -- without
breaking it. As soon as it starts to "skate" under light pressure, it'll
work-harden the metal, dull the cutter, and end up making lots of smoke
and noise; and go nowhere.

And it likely will ruin the hole so you can't get anything else through
it except carbide.

LLoyd


Well..there is always EDM

G

"Its a simple procedure involving lasers."
"Coool!"


tschus
pyotr
--
pyotr filipivich
"With Age comes Wisdom. Although more often, Age travels alone."
Couple years ago,Juniors FiL sent in a bucket of drill bits for the DD
treatment. One caught my eye; apparently a 1/2" carbide bit that had
lost it's bite and been re-ground in desperation. I carefully
sharpened it to the proper geometry and keenly sharp lips, then
drilled a 1/16" hole through the web and attached a tag reading "DRILL
SHAPED OBJECT - USE ONLY FOR MAKING HOLES IN ROOM TEMPERATURE BUTTER"
From all reports, Larry totaly lost it when he saw the tag.
---

Gerry :-)}
London,Canada