"Magic Butterfly" or "Butterfly Surprise/Prank" is a flying toy to surprise your friends when it flies out of a letter, book, card, magazine, etc. There are so many kinds of these butterfly toys, and you can get it easily from the Internet. (https://www.google.co.kr/search?q=magic+flying+butterfly)
I designed a fully 3d printed and rubber band-powered flying butterfly like the Magic Butterfly.
And it was designed to fit the 30mm long rubber band. So, this is much smaller(65mm wide x 60mm tall) and lighter(about 850mg) than other fliers.
Materials and Tools
. Rubber Bands : 30mm long (lay flat length) and 1.4mm thick
. Aluminum(coke or beer) can, and scissors
. 1.5mm drill bit and hand chuck
. A small file or sandpapers
. Some Super Glue (CA)
How to assemble
Remove remnants of 1st layer and lightly sand it to smooth out part of the 3D printed pieces.
How to make a plate bushing(bearing) from an aluminum can.
Finally, the upper wings should be twisted in order to act as a propeller.
How to take flight