This is an awesome coffee table by enginartists RockPaperRobot. This is classic physics at play, as the magnetized walnut cubes try to spread apart while the whisker-thin cables between the blocks keeps them tethered together. The effect is very cool, but I do wonder how much load this thing can take. Can you reasonably expect to set a glass on this thing with it acting uncontrollably? And I don’t know if this is a real possibility given the nature of magnets, but what about the magnetic force dissipating over time and the entire system become unbalanced? This seems like something that must be highly tuned. I bet long-term quality issues are a nightmare! Very cool idea, though.