Toroidal Propellers

https://youtube.com/shorts/17v7e-1DxEU?feature=share

I gutted this $45 Amazon drone https://amzn.to/3R1EyMj to create this unique toroidal drone!

The toroidal propellers make it much quieter and losing the frame cuts the weight by about 33%.

I included the .f3d file so the props or frame can be potentially adapted to another drone.

A toroidal propeller is a type of propeller that is ring-shaped. Toroid propellers are significantly quieter, and are claimed to be more efficient than traditional propellers both in air and water.
Wiki - https://en.wikipedia.org/wiki/Toroidal_propeller

Disclaimer: The full build is challenging. I would recommend replacing the stock propellers with toroidal propellers before deciding if you want to go through with the entire build.

Settings - I printed my propellers in HIPS (high impact polystyrene) but polypropylene, PETG, or PLA should probably still work (although probably heavier and less impact resistant). Be sure to remember that 2