Erik Gatenholm grins widely as he presses the start button on a 3D ... printer, as its thin metal needle buzzes around a Petri dish, distributing light blue ink in a carefully programmed order.

The first commercial airplanes with 3D-printed parts were cleared for takeoff about 10 years ago. Today, nearly all aircraft contain at least one 3D printed part. The global aerospace 3D printing ...

Court documents state police found the 3D printer and enough parts for two semi-automatic ... of firearms as a result of a protection order against him that had been issued 10 years earlier.