I am making an all metal waterwheel, using trampoline frames! The cost is really low, as people are just giving them away nowadays. I have four, 2 x 8' and 2 x 12', I plan to weld the paddles to the concentric trampoline hoops, which are very strong, and mount on an axle.
I fear I will have to buy the sheet metal paddles! Unless, of course you have any lo-cost lo-tech suggestions!
I fear I will have to buy the sheet metal paddles! Unless, of course you have any lo-cost lo-tech suggestions!