On 5 Sep 2005 07:57:06 -0700, jim rozen
wrote:

In article , Harold and Susan Vordos says...

I, for one, do. Spiral point taps are intended to be power driven and are
not easy to start by hand. They're prone to damaging the starting threads
because they don't self align well, the way a taper tap does. . There's
no better tap on the market as far as I'm concerned, but I also have a
Procunier tapping head.

Spiral point taps and two- or three- flute gun taps are not the same
thing however. Spiral point taps are designed to extract the chips
backwards out the hole in a continous cut. The gun taps are ground
to sling the chips forwards in the hole, and as such are best used
in through holes.

Umm one little nit pick. Spiral point taps are gun taps. Spiral
"flute" taps are the ones that bring the chip out of the hole.


Wayne Cook
Shamrock, TX
http://members.dslextreme.com/users/waynecook/index.htm