Propeller for boat/fan

grabcad

So i just learned how to make proppelers, im obssesed with how easy it is, and so i printed one of my designs. ill try if i can use it to move small boat, but i dont think the blades will be rigid enough, but since this geometry is good for high volume flow u can use it as DIY fan bladePrinting setup in gallery, i used 0.1 layer so the supports were only on the blade edges but having supps under the whole blade is mostlikely better, so u can go for 0.2 layer