On Feb 11, 2006, at 10:53 AM, Jack Burgess wrote:
Larry wrote:This is about carbide. HSS is always sharper than carbide so HSS will drill faster and better than carbide in your plastic, resin or what ever when drilling by hand.!!!!!!!!!As a machinist I would never use one for any thing with a Rockwell of lessthan 56 and never hand drill with one.
Part of the original question was about hand drilling with #61-80 bits. IThank you