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I love it all!! 😍 😍

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Supercharge your Marble Runs with the Bambu Lab A1 3D Printer

I spent 1000 hours printing 250 add-on accessories for GraviTrax marble runs on these 3D …

3 comments

  1. They don't spin on their own. They have motors inside. They are also finicky

  2. Not to mention there are MLB ones

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