STEP 1 Cut/purchase a 3/4 inch
thick piece of plywood to a 4 foot by 4 foot square.
STEP 2 Draw an X from corner to
corner on the plywood.
STEP 3 Draw a circle that is nearly 48 inches
in diameter. The because
The pressure the vacuum will need to deliver to levitate the hovercraft
will be reduced if the area is increased.
STEP 3 Continued
To make the circle, start by hammering in a nail about 1/4 into
the center of the X on the board. then get a string with a loop
on each end. Place one end of the string around the nail. Put the marker in
the other end of the string -through the loop.
STEP 4 Cut out the circle with a saber or scroll
STEP 5 Sand the top and bottom edges of the
disk round. It you have a router, use it to round the edges. Clean
the saw dust off the dust.
STEP 6 Wrap duct tape around the edge of the
disk. Make sure it overlaps the top and bottom of the disk. the tape
will cover any remaining rough edges.