This is a ball mill used for refining materials into a fine powder. [Jpoopdog] built it in two parts, a base and the tumbler chamber. The base itself is build using LEGO wheels as rollers.
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Custom LEGO Technic Vehicle Moves Ping Pong Balls at New HeightsWatch as this innovative design overcomes the obstacles of different levels, proving the power and creativity behind LEGO engineering ... transporting a ping pong ball from one point to another ...
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