Allan Llewellyn's rolling ball sculptures are part of 'Play' at Modified Arts in Phoenix
What is play? How do we distinguish it from work? These are questions raised at “Play,” the current exhibition at Modified Arts.The Show went to the exhibit to speak with an artist who creates rolling ball sculptures. By day, Allan Llewellyn is a computer programmer. But in his free time he makes kinetic sculptures that sort of look like roller coasters for marbles.
Source: kjzz.org