DIY technology gadgets that use balloons and CDs to make your own hovercraft

This is a comparison An interesting little technological invention, a hovercraft that can slide on the table with a gentle blow. Don’t you think it’s magical for the children? In fact, this technological little production is not complicated at all. It uses balloons to exhaust downwards to offset gravity. , reducing the friction between the desktop and the disc, so it can slide on the desktop easily.

DIY with balloons and CDs Materials required for small production of hovercraft technology:
A CD, a plastic bottle cap, AB glue or 502 super glue, a balloon, and an awl.
How to make a simple gizmo:
1. Poke a 2-3 mm hole in the center of the bottle cap, and then glue the bottle cap to the CD The exact center position (this is very important, if it is glued off-center, the effect will be bad).
This is from the reverse side, which is the flat side.

2. After the glue dries, inflate the balloon, hold the mouth with your hands to prevent it from running out, and then put the mouth of the balloon on the lid of the beverage bottle.
Release the balloon, and the gas will spurt downward from the small hole in the bottle cap, forming an air film between the disc and the desktop, which greatly reduces friction, so with just a little external force, the disc can be placed on the desktop Its moving.