3D Printed PrototypeTechnology Evaluation and Research Aircraft (PTERA) fully operational arial drone

Solid Concepts teams up with Area-I and creates the world's smallest jumbo jet (737) to test high-risk circulation control systems, conformal fuel tank concepts and other advanced aerospace concepts with SLS 3D printed parts.
So, basically, full sized drones are almost fully 3d printable now. Skynet could use this technology to exterminate humanity ...

Source and detailed information:

http://blog.solidconcepts.com/industry-highlights/low-cost-test-platform-uav-holy-grail-future-aircraft/