posted 04-10-2002 11:48 AM PT (US)
What you need before you start
You'll need the following items to build your hovercraft:
One piece of plywood about 3 to 4 square feet, 3/8 to 1/2 inch thick
Plastic sheet one foot larger than the plywood
Leaf blower or shop vac
Plastic disk such as a coffee can lid
Bolt: 2 inches, 1/4-20
Two fender washers
Build it: Platform
Cut plywood into a disk shape.
Drill a 5/16-inch hole in the exact center so that the 2-inch bolt easily passes through it.
Cut a hole to exactly fit the hose from the leaf blower or shop vac. Place the hole slightly off-center, about four inches away from the hole for the bolt.
Build it: Air cushion
Lay plywood on top of the plastic sheet.
Fold the edges of the plastic sheet over the plywood and secure it with a staple gun about every four inches.
Cut off excess plastic sheeting.
Tape down edges of plastic with duct tape.
Build it: Vents
Poke a hole in the center of the small plastic disk.
Place it on the plastic sheet.
Cut six small 2-inch vent holes in the sheet about two inches from the plastic disk. Be sure to keep about two inches of plastic between the vent holes.
Connect with the bolt, nut, and washers.
Build it: Get ready to go
Use duct tape to seal any holes and reinforce weak areas.
Flip the hovercraft over so the plastic sheet is at the bottom.
Stick the leaf blower or shop vac in the hole and turn it on.
I am going to build one and drive it around on cam. hahaha