When I get so far with measuring and cutting, it's hard to resist a little bit of building! I know it's a waste of time to start construction until you have all the bits, but it's hard to resist! :)
I got some 8mm rod over the weekend and cut it to size. I got enough rod-clamps made up to fit the Y-axis loosely, and then cut two Z-axis motor mounts, again from my trustee oak floor board. (I'm going with the Prusa variant, which uses two Z-axis motors.)
So here you go... progress to date in pict below! Next it's how best to build the X-end-motor-mount and X-end-idler... out of wood. :)