Interesting toy making - using the principle of air membrane to make a hovercraft that can swim on the desktop. It is a very interesting small technological production. Lets see how to realize it.
Materials: an old CD, a beverage bottle cap, AB glue or 502 strong glue, a balloon, an awl
1. Use an awl to poke a small hole of about 2-3 mm in the center of the beverage bottle cap, and then glue the bottle cap to the center of the disc (this is very important, as the effect will be off-centered) It will be bad)
2. After the glue dries, inflate the balloon, pinch the mouth with your hands to prevent the air from running out, and then put the mouth of the balloon on the lid of the beverage bottle
3. Release the balloon, and the gas will spray out from the small hole, forming an air film on the disc and the desktop, which greatly reduces the friction between the disc and the desktop, so the disc will move easily on the desktop. Get up
