04-07-2013, 09:51 AM
(04-06-2013, 08:49 PM)PixMan Wrote: ... First, being somewhat thin and soft, the twist drills just want to grab and pull the part up the flutes. ...
I will suggest that I have had very good luck on thin sheet metal with step drills. They still grab but not nearly like a regular fluted drill bit.
http://www.harborfreight.com/catalogsear...ult?q=step
Arvid