Sine cosine machine

Sine cosine machine

I’m a physicist, and for me sine and cosine are first and foremost laws of motion: the horizontal and vertical shadows of a pin on the edge of a rotating disc, cast on a wall.

Some time ago I decided to create a sine–cosine machine to demonstrate this idea. One evening of work in Blender, and here we are.

The problem was that the mechanism tended to stick. A piece of sandpaper and a bit of silicone oil pretty much solved it. The machine is lost now—though I can probably find the 3D files and print it again.