I’ve completed the layout of parts for this Crank/Cam Essential Mechanism. The final tweaks to the cam profile have made the finished mechanism run beautifully smoothly. As the handle is turned the main orange push-rod traces out an almost circular path above the box top.

The pink cams move the yellow cam follower up and down on the push rod three times for each turn of the handle.

The mechanism will make a really interesting starting point for your own paper animation characters, especially as a flying model where the character’s wings flap briskly and the character rocks back and forth. Next step, assembly photography then I’ll release the completed kit.