@profsen That is true only for Binder Jet 3d printing. Other methods such as Direct Metal Laser Sintering(DMLS) and Direct Energy Deposition (DED) there is no need for infusion.
We're building reusable single stage orbital rocket delivering 10 tons at $50/kg. Combining aerospike rocket engine with a reentry heatshield, spherical tanks and a largest 3D printer to print it. Raising $35M to begin construction of 100 ft tall, 50 ft diameter metal 3D printer.
@moddedLimes Marines at Twentynine Palms like when it's raining rockets :) just kidding. Only when reliability up to par with aircraft we will push for it.
@moddedLimes We'd start with Canaveral and Vandenberg, but since single stage rockets can be owned by individuals, like private jets, spaceports will become as ubiquitous as airports.