Hovercraft Made With 4 Materials !

This is a project I made a long time ago. I then remembered how to make it and now I love playing with it. This is like the hovercrafts people make in big sizes but I made the mini size.

The physics is pretty easy. The cap equally sends air from the balloon to the bottom of the CD. This makes a small levitation making it almost frictionless!

NOTES TO TAKE :

- You have to use the same cap I used for it to work. Not the exact dimensions but the mechanism of the cap should be like mine.

- Please don't use important CDs because you can not retrieve it back.

Enjoy!

- Balloon

- Hot glue

- CD

- Dishwasher cap

- Tape (optional)

Take the cap and put glue on the bottom. Please don't put too much and be careful with the hot glue!

Glue the cap right in the middle of the CD. Please make sure the hole under the CD is not blocked by glue!

Blow the balloon not too big. A big balloon can slow it down. then attach the balloon to the cap when the cap is blocked not open so that air can not escape.

If your balloon is tilting when it is on the cap, add some tape to the stem so that it can stay up.

To start running it, just lift the cap so it is open. Then watch it move around the table.

Note

- Run it in a smooth place for it to work!