The European Space Agency (ESA) has successfully test fired a 3D printed platinum alloy thruster combustion chamber and nozzle. The world first test is further evidence that the 3D printing approach is a viable one for the aerospace industry, with the potential to cut costs by streamlining production methods and adding a greater level of flexibility in terms of supply and demand construction.

The 10 N hydrazine thruster combustion chamber and nozzle was printed in layers from a platinum-rhodium alloy, using a laser printing machine ordinarily used for creating jewelry. The engine was then put through 618 ignition tests during which reached a maximum temperature of 1253 °C (2287 °F). According to ESA, theses results are on a par with thrusters produced via conventional machining methods.

"The aim was to test this alternative manufacturing method as a way of reducing material costs," states ESA engineer Laurent Pambaguian regarding the project. "At the start we were by no means certain it could be done, or even whether the metal powder could be prepared to the appropriate quality."