Flying Dragonfly Toy

I designed a fully 3d printed and rubber band-powered flying butterfly.(https://www.thingiverse.com/thing:2544137)
This is a dragonfly version. It was also designed to fit the 30mm long rubber band. The total weight is about 980mg.

The take-off and flight performance have much improved.
(https://www.youtube.com/watch?v=fZbxoIbeQcQ)

For more information, see the butterfly version .