Based on the Batarang used in the Batman Arkham games by Rocksteady Studios, I created a mechanical Batarang that, with a spring and magnets, is capable of opening to be "thrown" and folding for compact carrying. This was the very first thing that I 3D Printed, and at the time, I lacked other accessories I needed to fully connect all the pieces in this model, as evidenced by the scuffed painting and the use of tape to keep parts of the project secure as I lacked proper superglue. However, despite this, the project was successful as the Batarang could open and close as I desired.
Opened Batarang
Folded/Closed Batarang
Video of the Final 3D Printed Batarang