Propeller Maker - Customizer - Model Plane, Model Boat, etc.
thingiverse
Updated April 21, 2021 Very simple Open SCAD file for generating propellers for model planes, could also be used for propellers for model boats. I doubt these would work efficiently for actual propulsion in this iteration. I have included a few samples. Default settings for typical balsa plane model. Feel free to remix to add airfoil profile, taper, different front and rear profiles, twist, etc. This is beyond my skill and need.
With this file you will be able to print Propeller Maker - Customizer - Model Plane, Model Boat, etc. with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Propeller Maker - Customizer - Model Plane, Model Boat, etc..