If you haven’t heard of it, OpenSCAD is a really wonderful tool for 3D modeling. While it doesn’t have the traditional graphical interface of AutoCAD – it’s basically a programming language for 3D ...

I modified a printer a few years ago to handle multiple filaments, but I will admit it was more or less a stunt. It worked, but it felt like you had to draw mystic symbols on the floor of the lab and ...