Here are some pictures of what I'm calling a "Z-Axis Adapter" - basically the way that I designed the Y-Axis, I wanted a way to have the Z-Axis rails on the other side of the linear bearing assembly and I also wanted the rails to be a little wider than the assembly would allow. So I came up with this adapter. This allows me to attach the rails on the side that I want and have just enough clearance from the t-slot extrusion, but not too much. My goal is to conserve as much of the X-Axis travel as I can, and I think I'm squeezing a good 2 inches by making these adapters and having the Z-Axis opposite the linear bearing assembly... Here are some pictures. The first is how the part looked in Mastercam, then there are the pictures of the two foamies with sprues attached, then one of the parts on my bench after a little cleaning up, and finally a few pictures of them installed...