Akiyuki’s LEGO Great Ball Contraption.

Japanese LEGO and machinery enthusiast Akiyuki has spent over 600 hours in the past two years building the most incredible LEGO machine we have ever seen, he calls it the ‘LEGO Great Ball Contraption’. Balls in Akiyuki’s great ball contraption travel 30 meters through 17 different modules. Akiyuki has also built this LEGO contraption which has been seen over 4 million times.
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