Materials: an obsolete CPU fan, a small round lunch box, an AB glue, a set of copper wires
You can use this by fixing the lunch box on the fan wheel and then installing it in the hamster cage. The running wheel made by this method saves money, and the SS runs silently and will not be noisy enough to keep you awake.
Tools: 1 disc box containing 25 blank discs, 1 nail of suitable size, and cork 1
Process:
1. Remove the upper part of the disc case (the transparent part), and use an awl or something like that to make a hole in the middle. It is required to choose the right nail. Can pass through easily. Cut the cork into 2 parts (cork 1, cork 2) and set aside.
2. Pass the nail through the hole from the inside of the box, and then through the cork 1. (This process can be done by hand. If you are weak, you can find a tool and find a solution by yourself.) Note: Do not clamp the cork 1. If it's too tight, give the box room to rotate. Then, put the whole thing in the cage at a suitable position. Nails go through the wire mesh and nailed to the wooden plug 2 outside. The wooden plugs 1 and 2 are as close as possible. It's done.