Marble Mountain, a huge themed marble machine in progre

Ben Tardif is building a huge marble machine made from 25 themed and soon-to-be-themed sections — a roller coaster, ski jump, Times Square, Lombard Street, and a fairy tale castle are just a few examples — that bolt together 32 possible paths for the 250-300 steel marbles that it’s made for. Measuring 12 by 8 feet (3.7 by 2.4 meters), and standing 8 feet (2.4 meters) tall, the kinetic sculpture ta

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