Summary
This object prints in one piece without raft or support, fully assembled, hinges and all! The resulting model will hinge from a square to a triangle and back again.
The model is based on Dudeney's famous hinged dissection known as the "Haberdasher's Puzzle". For more information, see MakerHome, Day 188.
Video: https://www.youtube.com/watch?v=YwwqcHXIfn0

Instructions
Be sure to print with no raft and no support or the model will not work correctly. After printing you need to give the hinges a little "snap" to get them started.
This model is optimized for printing on a Replicator 2 with .3mm/low resolution. If you have problems printing on a different machine then tell me details in the comments and I will post some tighter/looser variants that might work better.