Significant savings of time, money, and weight using 3D printed aluminum parts for rocket engine nozzles and more

https://spinoff.nasa.gov/3D_Printed_Engines_Propel_Next_Industrial_Revolution

"Reactive Additive Manufacturing: infusing aluminum alloys with particles of other materials to make amenable to additive manufacturing... aluminum alloy powder for large-scale printing... strong without requiring heat treatment, wear resistance, thermal conductivity, temperature tolerance, scratch-resistant... 3D printing allows for designs that are otherwise impossible... rocket engines, large satellite components, cars, lighting fixtures, computer chips"