Put a key on the hook, and the weight makes the garage door open up to reveal the 1/64-scale car of your choice. Regardless of what you put in the garage, this is an awesome way to hang your keys.

The United States Marine Corps, in collaboration with the Naval Air Systems Command’s (NAVAIR) Additive Manufacturing ... USMC Advances 3D Printing with First Suitable Substitute ECP.

Sgt. Kenneth R. Storvick monitors the progress of a 3D-printing job at Corps Base Camp Lejeune, North Carolina - image: DoD. Marines would be able to extract a "near infinite set of different UAS ...