I've been a little sidetracked with a cnc build lately. This is a wonderful first cnc project using a standard Arduino Mega 2560 with Ramps 1.4, running Marlin as the gcode controller. I printed the parts in a combination of black PLA and red ABS. Printed on a modified Prinrbot simple maker's edition.
This is the cyclone v2.1 pcb cnc which is located at https://github.com/carlosgs/Cyclone-PCB-Factory/tree/v2.1
I managed to build it before there were a detailed instruction file. But they have recently added it to: http://reprap.org/wiki/Cyclone_PCB_Factory/build
There is also a support group located at: https://groups.google.com/forum/m/#!forum/cyclone-pcb-factory
I'll try and post a video of it cutting some shapes in to plexiglass on the next few days. Be sure to print the gears out of ABS since PLA will not last more than a few runs.