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Step 4The Traditional Bit
Drill a hole in the middle of the bottle cap, as large as the hole in the CD.
Hot-glue the cap to the CD, upside down. As you press the cap in place, gently twist it to ensure the glue forms an air-tight seal. You must be very careful to avoid glue oozing through the hole in the CD, as it will block the channels you have just made.
When all the gluing you did has dried and/or cooled, blow up your balloon and twist the neck to keep the air in.
Stretch the neck over the cap, place the hovercraft on a smooth surface and let the neck untwist. Air will rush down the channels, under the craft and lift it on a cushion of air. The slightest nudge should send the hovercraft scudding away.
Hot-glue the cap to the CD, upside down. As you press the cap in place, gently twist it to ensure the glue forms an air-tight seal. You must be very careful to avoid glue oozing through the hole in the CD, as it will block the channels you have just made.
When all the gluing you did has dried and/or cooled, blow up your balloon and twist the neck to keep the air in.
Stretch the neck over the cap, place the hovercraft on a smooth surface and let the neck untwist. Air will rush down the channels, under the craft and lift it on a cushion of air. The slightest nudge should send the hovercraft scudding away.
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