I was sort of reluctant to make this Instructable as I have never told anyone how to make this or let anyone see me make it. If you unfold it, it is impossible to tell, also. It just looks like a bunch of folds radiating from a center point.
I came up with this design. A few people have told me that I didn't make it up but I swear this is entirely my original work. Please don't try to tell me that it isn't.
Anyhoo, to make this you will need one (1) sheet of 8 1/2" by 11" paper.
Step 1: First
Flip the paper over and fold the top part down. The fold line should meet the point where the two other folds intersect.
Step 2: Second
Step 3: Third
Step 4: Fourth
Step 5: Done (Mounting Instructions)
1) take an index card
2) fold it in half
3) make a slit 1/2-way down the folded side
4) make another slit about 1 mm away from the first slit and tear out the paper in between
5) stick your plane in it
The best part about this plane (and the reason no one's figured out how to make it yet) is that if you unfold it, it's impossible to figure out (see photos)!