Good info, thanks all.

Yaa, I meant *twice* the machining time of the 50k machines

I would be fine with a used machine but don't want something that will
require a lot of maintenance costs of course.

Does the ALLIANT CNC VERTICAL MILL W/ANILAM CRUSADER M EQUIPPED WITH:
9" X 42" fit the bill as far as ability to hold this tolerance and also
the run time?

I might be pursuaded to go with an enclosed machining center for a
little more money since it may work better down the road. What are my
price options for the smaller units and also for the less expensive
(I'm assuming import) units? Used prices but not for worn out stuff.
What are the top places to watch for these as they become available?

Thanks again guys.

Joe