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 ...

But this tutorial looks to make it understandable and (almost) easy. It focuses on programming a game for ... code by combining it with a bit of BASIC. You’ll see how to manipulate the ZX ...