About this 3D model

This two-piece template was supposed to guide you in cutting and folding a piece of cartstock to make a model with concentric rings that spin when you fold it, like the one shown in the video: http://youtu.be/2QXgaSLgxq4 Alas! The paper model didn't work very well when I tried it, but I decided to share it anyway. Maybe someone else can get it to work.