Building a marble run has long been on my project list, but now I’m going to have to revise that plan. In addition to building an interesting track for the orbs to traverse, [Jack Atherton] added ...

There are few things that can keep a certain kind of mechanically-inclined mind entranced as well as a marble run, and few structures that look as interestingly organic as procedurally-generated ...

Which marble run is best? Marble runs are rolling ball sculptures you build yourself. You assemble tracks in all kinds of wild configurations and watch as the marbles roll down hills, around corners ...