all-printed flying toy heli

I wanted to make a **completely** 3D printed helicopter that flies, without having to fiddle with wire for the rotary joints or plastic/tissue for the wings' surface.

Inspired by seeing science Olympiad helicopters on YouTube.

You do have to use a rubber band, and (optionally) some lubricant for the rotary joint.

https://youtu.be/imDvlCpEniI