Double Pendulum [clamp to desk]

Hi! This is my first thing, but I'll be uploading more soon.
It's my attempt at designing a double pendulum.

The concept: This is a simple contraption illustraiting the beauty of chaotic motion.

It is ment to be mounted on your desk with a lamp/furniture clamp, or a wood clamp (or any other clamping mechanism in this regard).

What you will need: 2 - 608 (skateboard) bearings (optionally a third one as counterweight), the allready mentioned clamp and (depending on your print) hot glue.