An interesting Arduino project has been published to the Instructables website showing how an Arduino CNC shield and controller has been used to create an awesome 3 axis Arduino CNC plotter.

Initially, they put an Arduino inside the control box of the CNC and it fit nicely ... and made an interposer from two small protoboards and some pin headers – letting them connect to the ...

constructed from a variety of 3D printed parts and using an Arduino Uno and equipped with a CNC shield. “In this tutorial we will learn how to build an Arduino CNC foam cutting machine.