How To Create a LEGO Spirograph That Can Draw Various Pleasing Circular Designs
Jason Allemann built a LEGO Spirograph that can draw several pleasing circular designs, such a “The Wheel” and “The Hurricane”. The arms of the machine can be adjusted to modify the design, and Allemann posted full instructions for the design on his site JK Brickworks so you can try making your own version.
via The Awesomer