How to build a paper watermill

This ebook is a very simple 2 page plan. Ideally a waterwheel should be made with a material like wood or plastic that will not go soggy and floppy in water. But, as these need to be cut out with hacksaws or very sharp knives, it is much safer if models are made with cardboard—though they will soon disintegrate when used in water!!

Don't expect to generate any electricity form this fun project that shows the very basics of how a watermill works.