41mm diameter propeller designed for my new 1/20 scale tugboat. This is designed to accept a 3mm diameter shaft, with nut. I have not tested this one yet, so no feedback on actual use. Designed to be printer with no support, it can be done with either a brim or raft for adhesion purposes. You might need to sand / file a bit on the edges.
https://www.youtube.com/watch?v=E_U5nFjZ52Q

For the Tugboat .stl, please send me a message.

If you like the design and find it useful, a little tip is highly appreciated. It will go a long way in my continued design developments and testing for all my design works. Thank you very much!!