The manufacturing machine can print strong and durable objects that are also lighter.

3D printers could transform the manufacturing of airplane parts, making airplanes lighter so they use less fuel. The above picture shows two hinges for a jet engine cover. The one in the background was created using conventional techniques and the one in the foreground was printed. The printed hinge's complex design couldn't be manufactured using conventional methods, and it weighs half as much as the other hinge. The 3D printer can make intricate forms out of high-grade metal, allowing it to print mechanical parts. According to MIT Tecnology Review:

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