Helicopter 2x2 Twisty Puzzle v1 (Deprecated)

UPDATE 6/27/18: I have created a better version. Here is the link: https://www.thingiverse.com/thing:2979479. The linked version is much more robust and smooth turning, so print the linked puzzle and not v1.

NOTE: This puzzle turns atrociously. When I designed it I used a Rubik's 2x2 mechanism for the core instead of the usual bandaged 3x3. I did this because I thought it would give me more space for the mechanism. In hindsight this was a very bad idea, because the Rubik's 2x2 mechanism uses