A place where CNC guys hang out and share projects/ask questions is -
http://www.cncguns.com/forum/index.php
...and they have some CAD programs already worked out...
http://www.cncguns.com/
Roderus is more garage-workshop guys (ex. Bridgeport Mill, South Bend Lathe) where CNCGuns is...well, CNC workcenters...but CNCGuns also has many smaller workshop guys (like me!) too...