In rec.crafts.metalworking Harold and Susan Vordos wrote:
The one big difference is rake angle. Center drills are zero rake, do not
cut to center, and have little chip relief. Those conditions do not lend
themselves to easy machining.
--Soooo they're good for thin materials but not for drilling to
depth?


--
"Steamboat Ed" Haas : I'll have the roast duck
Hacking the Trailing Edge! : with the mango salsa...
www.nmpproducts.com
---Decks a-wash in a sea of words---