Challenge yourself and build an intricate, working marble run fashioned from beautiful, laser-cut wood pieces. This sculptural model is part architectural genius, part engineering marvel, featuring the design of a historic waterwheel and the fun of a hand-powered marble run! The manual crank moves the marbles through the course by setting an elaborate system of steel shafts, cogs, gears and wheels in motion smoothly and seamlessly. Gearjits combines all the benefits of traditional building sets with principles found in leading STEM toys. With easy-to-follow instructions, masterful design and an awe-inspiring finished form well beyond the norm for construction toys, you
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