Build log at last

[Boyan Silyavski]

I certainly like the double ball screw idea and placement, what i dont like is the possibility of adjustment and the fact that both end supports are enclosed by the frame. Make sure the ball screw assembly is shorter by 1-3mm than the distance needed and use a plate inbetween, so you could sand the plate and adjust accordingly, or use epoxy putty there, adjust and let it dry.

Just make sure you mount the rails perfectly, that will guide the ball screws and will greatly facilitate the final adjustments