Hello people,
I am working on my third build right now, which is a CNC lathe (which can also be used as a manual lathe if needed). It will be built on a steel frame and the headstock will be made from epoxy granite. The lathe frame will have about 300mm of travel( 12 inches) and the largest work piece it can handle is 160mm (roughly 6.5 inches in diameter). I am currently building it with TR12x3 trapezoidal lead screws, but will upgrade to ballscrews of similar size in the near future. I am making the nuts myself and they will be made from Teflon round stock (I had a big piece left over from before).
The rails are HIWIN HGR15 and carriages are HIWIN HGH15CA (no preload, regular accuracy). The motors running the machine will be NEMA 23, 3NM steppers, stepped down to 1:2, giving about 6NM at the screws.
Thats it for now, I'll update when I have more information