Re: dans' mill/drill quill retrofit

Doug,

I'm not Dan, but I can think of a few ways...

Easiest would be to put the lathe in "threading mode" (at the same
tpi as the ballscrew). Mount an indicator in place of the threading
tool, and set it 'riding' on one flank of the ballscrew. The
ballscrew is mounted in a collet/chuck of the lathe. Far end of
ballscrew supported by a live center).

Now you can turn the lathe by hand(or slowly/ carefully under power),
and see any pitch variations reflected in the indicator reading. Of
course, this assumes the LATHE is accurate!

Hope this helps.

Ballendo

>Just curious...how did you use your lathe to check the pitch?
>thanks,
>Doug