Fifteen Minute, Self-propelled hovercraft

Step 2 Make the Intake

The intake should be as short as possible to allow very little air to escape. Measure the length from the bottom of the motor to the end of the propeller blade, then add a half a centimeter or so. The top should be just wide enough to fit the motor on it without too much overhang. The angle of the back isn't crucial, but I have found 45Ú works the best. Once you have figured out the measurements and cut it out of cardboard, glue it all together with liberal amounts of hot glue.