Movement of the chuck other than centered on the axis of rotation. If
you've ever bent a bit slightly, or chucked it a touch off-center, you've
noticed the tip makes little circles. If the DP quill / chuck combination
has runout, the small circle is the _best_ you can hope for.

It says it was presented at a "symposium on hole technology," but in spite
of that ominous-sounding intro:
http://www.lionprecision.com/spindle/targaarticles.html

"AArDvarK" wrote in message
news:idQHc.10704$ri.6663@lakeread04...

Newby here... what is "run-out" ???

Alex