The Kid Should See This

Rainbow Wave LEGO Great Ball Contraption

Featuring a 38 color rainbow of LEGO bricks, this Rainbow Wave LEGO Great Ball Contraption (GBC) was built in over 100 hours by Berthil van Beek. It’s his first GBC build. Watch as tiny soccer balls and basketballs move along the top of the wave. Via Brothers Brick:

The Rainbow Wave Great Ball Contraption uses about 1,150 pieces and is powered by a single motor, with each of the colored pistons sitting on an 8-tooth gear. Each piston’s gear is exactly 1 tooth offset from its neighbors, and this means the balls travel in a perfectly level line as they move across the waving surface. Berthil says this mechanism took a lot of testing and redesigning to perfect…

Related: GreatBallContraption.com.

Next, a classic video: The LEGO Great Ball Contraption – 17 different modules of incredible.

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