Water Wheel

We designed this water wheel for an engineering project at school, where we had to use a 1.5V electrical engine to create something.
The wheel is designed to be compatible with a lego technics axle, and can be used to drive a boat forward (as shown in picture), or it can be used in a water mill to drive internal mechanics (we tested this under a running water tap).
Note that my printer settings were incorrect, so that the axle didn't fit when it was printed; make sure your printer is properly calibrated if you want this to work with lego technics axles (otherwise you can easily drill out the center of the water wheel, as I did).