I bought a two-piece $60 adaptor at a camera store just like this one and realized it's really just a piece of plastic, so I figured I'd model/print my own and save myself those $60! The model in the photos isn't the final plan, I made a few small adjustments to it worked better. Camera attachment end taken from nickswimsfast here: http://www.thingiverse.com/thing:88093 Everything else was designed by me!