These are replacement propellers for the Parrot Bebop Drone, but they can be used for the Parrot Bebop 2 (in the future I will adapt them perfectly for this model).
My propellers was printed in PLA and are resistant and flexible like the original ones, the only flaw is that you have to sand them to make them smoother and more aerodynamic.
The printing process must be special to make the propellers resistant and flexible, in fact in addition to set the percentage of filling to 100% must increase the number of perimeter shells to the highest possible number (I used 10), this will create a very elastic fiber that will prevent the rupture of the propellers.
Obviously, the propellers have been extensively tested in many weather conditions and I have not found any signs of failure.
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Do not forget to comment describing your tests and illustrating your ideas and possible improvements.