Folding propeller to small electric glider
Print the "fork" and 2 similar blades.
Blades has quite a lot overhang, it could cause problems.
You can use small bolt and nuts (maybe washer) to join them.
I used 3mm filament and glued it to fork with ABS glue (acetone+ABS).
I tested with small geared motor, and least it made some wind ;-)
Haven't tested it with plane, I'll try it with small (120cm) Graupner Discus