![Materials engineers made this one-piece rocket engine injector in just 40 hours in a sophisticated 3-D printing machine.](https://www.nasa.gov/wp-content/uploads/2023/03/photo2_rev2.jpg)
Rocket Engine Injector Manufactured With 3-D Printing Machine
Materials engineers made this one-piece rocket engine injector in just 40 hours in a sophisticated 3-D printing machine at the Marshall Center.
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https://www.nasa.gov/image-detail/rocket-engine-injector-manufactured-with-3-d-printing-machine/
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