Any time two planes overlap (read: are not parallel), they overlap in one of four different ways: cranes, butterflies, atoms, or tangles. In the first three arrangements, it's possible to keep the poi rotating without interfering with each other. I'm pretty sure that any and all tangles result from the final atom shape. Here's a handy-dandy diagram that breaks this down in an easy-to-read fashion: http://www.drexfactor.com/sites/default/files/atomicclashes.jpg

You are missing some Flash content that should appear here! Perhaps your browser cannot display it, or maybe it did not initialize correctly.

techblog294.mp4