It might interest you that NASA has already been offering prizes for developing the tech for 3D printing lunar structures - https://www.nasa.gov/press-release/n

It might interest you that NASA has already been offering prizes for developing the tech for 3D printing lunar structures - https://www.nasa.gov/press-release/nasa-awards-400000-to-top-teams-at-second-phase-of-3d-printing-competition https://www.nasa.gov/press-release/nasa-awards-400000-to-top...