The first thing we need to do is design the housing for the generator. The most important factor in deciding the shape and size of the housing is the size of your magnets. The magnets we are using are Ceramic Block Magnets with a size of 3/8” x 7/8” x 1-7/8”. Because of the magnet size we decided to make our housing 2-1/2” x 1-1/2” x 3”. This leaves enough room for the magnets to spin around inside the housing.
Grab your cardboard box or piece of cardboard that you will be using. The thicker or stronger the cardboard the longer it will last. We found the easiest way to build the housing is to cut one length of cardboard and fold it. In our case we cut a piece of cardboard 3” x 8”. We then folded at 1-1/2”, 4”, 5-1/2” to form a rectangle. Just like the picture above. We then used hot glue to hold the ends together. Make sure you use enough hot glue that it holds together quite well. Now that your housing is built you can start to add the wire.