[Mark]’s sand table wisely has a glass top. Most of us have probably seen a video of a sand drawing table at work, in which a steel ball — magnetically-coupled to a gantry under a layer of sand — ...

[Mark]’s sand table wisely has a glass top. Most of us have probably seen a video of a sand drawing table at work, in which a steel ball — magnetically-coupled to a gantry under a layer of sand — ...

A living room featuring this kinetic art table has no need for coffee table books—or a television, for that matter. You can happily entertain yourself for hours just watching the steel ball create ...