I really liked Patrick D’s ideas of using the Four Bar Linkage mechanism I’d animated a while ago as part of my YouTube outro. To that end I’ve made up a paper model version so that I can give it a screen test.

I was rather pleased with this box design which clearly shows all the working parts whilst being solid feeling once put together.

Here are the four parts joined together ready to accept the paper engineering mechanism.

The four-bar linkage fits neatly into the box.

A hand and a "Subscribe" sign finish off the model. I’ve put together a quick Instagram video so that you can see it in action. I’ll have a go at a proper screen test shortly.