mac davis wrote:

On Sat, 04 Mar 2006 06:03:44 GMT, Lobby Dosser
wrote:

I may be the one confused. IIRC, the lower runs at top speed, or
thereabouts. The upper, as you point out, should run at the same speed
as the spindle.

Just picturing it in my mind, and I think you'd need major revisions
of the tubes to run a 12" disk on the bottom shaft.. *g*

Saw blade for the revisions!