This game was given to me by my father 40 years ago. It took a little while to figure out then, I was young. Recently after being found after many years of hiding I discovered it was still a fun challenge. The object of the game is to get the nut on the b side of the toy to the a side of the toy. The nut does not fit through the center hole. I've challenged many adult friends to take the test and they failed. I wish, I could hide the answer until you were finished making it.
Step 1: Layout
Draw out the pattern on whatever you decide to use as a base. I chose a thin wood crate top just because it would be easy to cut with a carpenters knife and drill with a cordless drill. You could easily use cardboard, aluminum or plastic.