On Mon, 9 Oct 2006 14:32:33 +0000 (UTC), Bruce Barnett
wrote:

"Robatoy" writes:

I am in need of a few sizes of flat-bottomed holes.

The difference between HCS and HSS is well established, and worth the
extra few bucks to go to HSS.


one thing to be aware of with the cheapo ones is that
they can't cut well unless you have a starter hole in the middle.

The good ones can cut without a center support.

Hmm. Mine seem to be fine, though I don't know about the HF ones.
Though I never used anything from them- the prices are so low, I get
visions of Big Lots.