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Avid K’nex specialist Austron claims to have built the world’s largest K’next ball machine which is housed at The Works Museum in Bloomington, Minnesota. And no one dares to debate his claim as the machine is truly colossal, standing over 23 feet tall and containing over 100,000 pieces. “It takes 3 and a half minutes for a ball to climb to the top of the tallest tower.” His fingers must be killing him.