3D puzzles are popular projects for CNC routing. This short video is designed to open the door just a little on this interesting field of routing.
There are literally hundreds, maybe thousands, of designs out there. This particular design comes with options for 3 mm, 6 mm or 12 mm material.
For this project I used a 2 mm end mill cutter tool with a single straight flute on 3 mm MDF. As you can see in the video, the cut starts out quite "rough" looking. However, a light sanding by hand or with an electric sander cleans the project up very nicely.