We didn’t notice [Nikita]’s post about building a concrete 3D printer, a few months ago, but the idea seems sound: build a basic CNC XY axis and then add a mortar pump and hose to deposit ...

And the Black Buffalo — a cement printer — uses a gantry that looks like it is part of a light show at a concert. It is scalable, but apparently can go up to three stories tall! Size isn’t ...

That’s especially damaging to the environment because cement, the main ingredient of ... gets converted directly into instructions for the printer. That eliminates the need to transfer designs ...