Hippo and Donkey Peek Over a Fence | DIY Cardboard Cam Mechanism

A hippo and a donkey peek over a fence using a DIY cardboard cam mechanism.
In this project, I show how a simple cam mechanism converts rotary motion into up-and-down movement.

A fun and easy way to learn basic mechanics and build moving cardboard toys

Additional materials: The animal and fence templates can be downloaded from the link below (website registration required):