Gunner wrote in message . ..
On Wed, 28 Jul 2004 01:08:01 GMT, Anthony
wrote:


The extra material removal is from the flex in the tool/toolpost/set-up
when taking the inital cut. The information about taper when doing this
is irrelevant and unuseful due to that fact. You would need to be able
to measure the differences in the flex of the tool tip in both directions
in order to obtain any taper information.

Just a big of trivia..that last final pass is usually called the
"spring pass"

Gunner

Now I know the name for it. I've seen that happen on my mill/drill.
I kinda thought a much sturdier lathe taking only .002 diameter wouldn't
do that.