build a basic CNC XY axis and then add a mortar pump and hose to deposit concrete. The video, below, shows the machine in operation. While it looks interesting, there is essentially no real Z-axis ...

Want to build up a desktop CNC machine without breaking your pocketbook? [James Coleman], [Nadya Peek], and [Ilan Moyer] of MIT Media Labs have cooked up a modular cardboard CNC that gives you ...