Steve Johnston has been busy using his 3D printer to create a remote-controlled aircraft (an electric-duct-fan EDF Hawker Hunter). Instead of directly printing the aircraft, however, he has taken a painstakingly thorough process to create molds so that he can repeatedly cast the aircraft parts out of foam, making for a very light weight aircraft.
The molds are made with 3D printed ABS, and Steve explains all the steps he has taken to go from digital design to the final parts. If you are interested in manufacturing your own products, this is worth studying.
