Have you seen those videos of those devices where a little marble draws patterns in sand, driven by a magnet? I've never owned one of those, but I can imagine myself staring at it for hours on end.

One way of doing this is to use rapid prototyping technologies. Rapid prototyping uses three-dimensional (3D) computer aided design to quickly fabricate a part or, alternatively, a sand mold for ...

Many of us have marveled at art installations that feature marbles quietly and ceaselessly tracing out beautiful patterns in sand. [DIY Machines] is here to show us that it’s entirely possible ...