Warning
Although this is a really simple project, if you are anything like Grandpa Pencil, you should have a responsible person help with the cutting and drilling. |
How to make it
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Take a plastic, screw-top soft drink bottle and cut it off below the top (where it reaches its biggest size.)
If your cut is a bit wobbly don't worry too much as you are going to attach it with modeling clay
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Punch a hole through the centre of your screw cap that you can blow through reasonable easily.
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Cut a piece of cardboard just a little bigger than the cut bit of the bottle, mark a circle from your bottle in its centre and within this circle punch some holes through with a pencil.
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Put a big snake of modeling clay around your drawn circle and press the bottle down firmly until it is solid.
You may need some adhesive tape to make it secure.
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Pull a balloon over your screw top so that you can still screw it onto the bottle.
How easy is that?
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Now, blow up the balloon through the cap, pinch the neck of the balloon to keep the air in and screw the hovercraft onto it.
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Place the cardboard down on a hard, flat surface and let go. It should hover just like the real thing.
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To give your hovercraft its own propulsion system just punch a hole in the bottle, near the base, slip a short length of drinking straw in and seal with modeling clay.
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