I think we are in agreement, that 3D printed buildings are feasible but impractical. I never claimed that it was impossible, but that there are fundamental dif

I think we are in agreement, that 3D printed buildings are feasible but impractical. I never claimed that it was impossible, but that there are fundamental differences which makes squirting out thermoplastic out of a small nozzle quite convenient, and concrete out of a huge one, quite problematic. The thing you wrote about lintels, and some of the stuff I've seen about reinforcement with rebars on the link you provided, which all need to be done manually make the process labor intensive, the issue 3D printed building were designed to solve in the first place. I'm honestly puzzled by some of the techniques, where one guy is spraying shotcrete at a rebar structure - what is being 3D printed at this point? And the resulting building will be a concrete house - not necessarily the most environmentally conscious, beautiful, energy efficient, best insulating material.