That (3D-printing houses) is a non-solution or a solution to another problem. When building a house, the actual structure (walls/beams/decks) is very, very fas

That (3D-printing houses) is a non-solution or a solution to another problem. When building a house, the actual structure (walls/beams/decks) is very, very fast to build, and if shorter times are needed, pre-fabrication is an already tested and working solution. What takes time is before: - site preparation - excavations - cableworls, pipes, etc. - foundations and after the naked structure is built: - internal walls - electric/hydrulic/etc. plants - floors, pavement - bathrooms and their fittings - decoration/painting - insulation/roof/waterproofing - tests (if needed), etc.