[spalm]

Hey Joe, looking good.

I really like the pipes on the top and bottom of the lower rails (your Y?) instead of the sides. It solves a few problems in my mind. I guess the bottom trucks are the adjustable ones? How are you attaching the bottom pipe?

I don’t see a leadscrew attached to your Z carriage. Where are you planning to attach to it (top, bottom, back)?
Edit: Now I see it. Ooops, nevermind.

I have been playing with a set of V-bearings for my 6 inch wide Z. I went with official rails. They are $1 an inch, but you only need two 1 foot (or so) sections, so the total price is not that bad. IMService cut them to length for no additional charge. I mounted them on wooden standoffs. The eccentrics only give you .048” of adjustment, so the rail standoff placement and parallel is critical. My first design had the motor riding up and down with the router, but I think I talked myself out of that.

I went with split rails on my Y to allow greater adjusting. This could also be used for your Z and then you would not have to buy the bushings.

Good Job,
Steve