Posted on his website, LaserHacker, lasersaber shows us how to 3D print and rig a micro amp motor. The printing process is easy enough, and the motor comes out looking very clean. Its bobbins are threaded with copper wire, and the motor is run using a small 10,000 UF electrolytic capacitor, micro-amp meter, and battery. The motor is powered by connecting it to larger pieces of copper and magnesium run through a "carrot cell" -- which is a small piece of carrot with a small piece of copper and a small piece of magnesium ribbon stuck in it. Using this very simple yet impressive arrangement, the motor is able to run for hours generating 1-1.5 micro amps. Check out more about this process over in the full article: http://3dprint.com/35500/3d-printed-micro-amp-motor/ ‎


Below is a photo of the 3D printed motor: