#SPACE: "World's 1st Rocket Thruster 3-D Printed by SpaceX"

3-D printing is no longer just for prototypes, but can also be used for limited-run end-user products. For long runs its still cheaper to use stamp dies for sheet metal, injection molds for plastic parts, and CNC (computer numerical control) machine tools for metal parts, but I predict that the day is in sight when even mass produced items will be using cheap, super-fast versions of todays 3-D printers: R. Colin Johnson @NextGenLog

Today the world's first rocket thruster fabricated on a 3-D printer was certified by SpaceXRS.

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