How to make a mini milling machine- manual or CNC! This guy has several other tutorials that are interesting. From making rings to halloween costumes.
Grbl Grbl is a free, open source, high performance CNC milling controller written in optimized C that will run on a straight Arduino.
Facit Homes - Facit Mobile Production Facility
linear slide guide shaft fully-supported bearing blocks) anti backlash end supports with locknuts and circlips.