Selective Metal Sintering has been done for what, 15 years now? But that dosen’t feed the 3DHype machine.
This is using copper and is more targeted to the Semiconductor Industry..................
NASA Tests Limits of 3-D Printing with Powerful Rocket Engine Check
The largest 3-D printed rocket engine component NASA ever has tested blazed to life Thursday, Aug. 22 during an engine firing that generated a record 20,000 pounds of thrust.
and...
The component was manufactured using selective laser melting. This method built up layers of nickel-chromium alloy powder to make the complex, subscale injector with its 28 elements for channeling and mixing propellants. The part was similar in size to injectors that power small rocket engines. It was similar in design to injectors for large engines, such as the RS-25 engine that will power NASA's Space Launch System (SLS) rocket for deep space human missions to an asteroid and Mars.The key is how easy it is to print the model (i.e. how much setup is involved). I expect that will only continue to improve with time."This entire effort helped us learn what it takes to build larger 3-D parts -- from design, to manufacturing, to testing," said Greg Barnett, the lead engineer for the project. "This technology can be applied to any of SLS's engines, or to rocket components being built by private industry."
It's tough to overhype as potentially disruptive of a technology as 3D printing.