http://pcbgcode.com/ https://github.com/atom-bomb/pcb-probe http://www.instructables.com/id/Make-your-own-PCBs-on-an-inexpensive-desktop-CNC-m/?ALLSTEPS https://www.google.com/search?q=cnc+pcb+router+kit&sourceid=ie7&rls=com.microsoft:en-us:IE-SearchBox&ie=&oe=&gws_rd=ssl http://www.instructables.com/id/Make-your-own-PCBs-on-an-inexpensive-desktop-CNC-m/?ALLSTEPS