Last week I started working on my crank. A crank is very similar to a cam, but the mechanics inside of the box is different and a little more complicated. To make your cam, first you make the box, which has the movement inside of it. Then you have to fold, cut and glue all of the little parts, put them together and you put them inside of the box. Finally, you put the ends on and you crank is finished! Well, not quite, you need to put some sort of animation on the top. I chose a plane is the sky. Mow you are done! Here is my finished project:

and here is the back: