Using a technology known as selective laser melting, NASA was able to create a rocket injector — the part that shoots fuel into a rocket engine — out of just two separate components, instead of the 163 that were required using traditional manufacturing techniques. So far, NASAs tests of its 3D-printed rocket injector seem to be going well: this week, the agency announced that the injector recently survived a 6,000-degree Fahrenheit test-firing at the Marshall Space Flight Center in Huntsville, Alabama. Watch the test for yourself in NASAs video above and its easy to see the sky-high potential of 3D printing and other similar additive manufacturing technologies.