Well, I decided to take the plunge and start a CNC conversion project for the HF micro lathe, since I've been thinking about it and talking about it. Borrowing the same basic concept of my 7 x 10, it looks like a little brother to it. Sort of like a Hardee's thickburger, only little.
The motor plates are cut from .125" steel on a waterjet cutter. The carriage block is some variety of tough nylatron type material that is used extensively at work. I couldn't find a suitable hunk of aluminum in the scrap bin, but this hunk of nylatron was perfect. The Z axis lead screw will be a 3/8-10 acme, just like on my 7 x 10. I could have re-used the existing lead screw, but I may have to sacrifice it for use on the X axis, depending on what I need to do to attach the timing pulley. The motors are NEMA 17's rated at 60 oz. in. from Keling.
The Z axis lead screw will be attached the same as on my 7 x 10, except I will be adding thrust bearings to each end of the motor. Think I will also add them to the 7 x 10. Although the motors like the ones on my 7 x 10 show no measurable end-play, I think the thrust bearings will be a good addition anyway, for very little cost.
What have I done.... now I have NO room on my workbench!
Apologies for the grainy photo quality (or lack of). Compliments of my iphone. My Samsung Eternity took FAR better pics, as seen in my 7 x 10 thread.