Actually been working on this a couple years now, just a little over the winters.

Here's where I'm at currently. Comments/suggestions welcome

specs;
800/500/300mm Linear rails
381oz/in stepper motors
Gecko G540 Controller
1/2-10, 5 start ACME lead screws w/Anti-Backlash nuts
Bosch 1617EVS Router w/PreciseBits collet set

I know 1/2 of the stuff isn't pictured. Will add more pics soon