Homebrew PCBs

Pardon, I just joined the list a few days ago, and so I was wondering: 
regarding the Wooden CNC router, is this one listmember's machine, or are 
there plans floating around for a machine?

I've got a cnc-converted taig mill, but I'm thinking about building a small 
router out of plywood or MDF to use as a PCB mill and as a positioner for a 
3D printing extrusion head.

Regards,
Sebastien Bailard
RepRap.org - self-replicating 3D printer project.