This remixes the popular pull copter by replacing the finger ring with a cylindrical holder. It also eliminates the screws and allows you to attach the holder to the gearbox with super-glue. It prints 3 alignment pegs and holes to align the holder with the gear-box.
I printed the rotor and key in PETG and the rest of the items in PLA with variable profile.
The pull copter flies very nicely :-)
The author remixed this model.