Modular Propeller - no support needed (easy to print)

Easy to print modular propeller with adjustable pitch blades. Blades can be pitched to push air in either direction. No support is needed and blades are strong.

Blades have held in place well for me with just resistance. Once you tune your propeller to the desired angle you can fix them in place with glue, acetone, or by pushing a hot wire though the assembly and clipping. A standard staple can be used for this purpose.

https://www.youtube.com/watch?v=Rflr9Lp7zE4