grbl is stepper motor controller firmware for three-axis cnc machines ... in this further EinW blog My small cnc mill project needs motors (so I am told) that are too powerful for the normal drivers ...

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.

“Using laser-cutting, off-the-shelf hardware and Arduino, you can make your own simple 3 axis robot. Attach a brush or pen to make a quick drawing robot, or extend Piccolo with sensors, custom ...