Add a Needle cutter to your CNC

Basically this is a CNC sewing machine.  The author added a motor that drops a rod up and down (the needle) really fast to cut foamboard.  Its a good idea thought you won’t get as nice of a cut as with a foam cutter.  Oh and its a cheap (ish) solution too.

http://www.instructables.com/id/CNC-Needle-Cutter/