Well, tonight there was some progress. All adjustment blocks are drilled and tapped. I also dug out the router to start on the dados in some of the parts for the Y and Z. MDF is a real pain in the rear. Oh well. Progress is pretty slow since after getting home I have to fire up the heater in the shop and let that go for an hour so it gets up to a decent temp.
Ger21... I downloaded FreeMill last night, and checked out the other. Thanks for the links, they look promising. The price for FreeMill is definitely in my price range

although I will probably upgrade to MeshCAM or STLwork later.
A question about FreeMill. I was playing around with it today and it has bunches of options for postprocessing. I've been figuring on running TurboCNC or a similar program to feed the 3-axis controller from HobbyCNC. My question is, which postprocessing option in FreeMill gives me the G-code or whatever that works (best) with TurboCNC?