Instructables

These require a lot of work but are worth the effort! It's not an exhaustive list...these are the ones that get my juices flowing and have inspired me to create a CNC mill.

The MicroSlice V1 | A tiny Arduino laser cutter style
This had to be added..it's amazing!
431K2869
Make a CNC mill with a laser cutter style
This is well crafted with a lot of detail.
100K1003
Building a CNC router style
This is heavy duty!
406K2136
Combination CNC Machine and 3D Printer style
Two for the price of one.
235K773
How to make a mini milling machine- manual or CNC! style
The first one I've seen using wood for the axis.
400K739
$20 CNC Machine style
$20 isn't asking too much.
445K1130