I'm young gifted and black... That's where its at.
Lifehacker, tips and downloads for getting things done. Instructables. CNC. NEMA 17 Stepper Motor - MakerBot Industries. MAS 863 - David Carr. My final project is a 3-axis CNC milling machine that costs less than $100 (currently $87) to build.
It can mill PCBs, wood, and even mild steel. These PCBs were milled using the machine. The traces are 10-15 mils. The left and lower right boards were milled at approximately the same speed as the Modela.