It's a folded-cut model that you can turn. And turn. And turn. It's pretty awesome, don't you think?
Step 1: What do you need?
- clear tape
- triangle/protractor/ruler (don't know what it's called)
Step 2: Drawing dots
Step 3: Connecting the dots
Also shown in the pictures is how to make the upper triangles.
Step 5: Folding
Step 6: Tape
Put the flaps from the one side in the pockets on the other side and tape that together also.