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Marble Operated Door Knob

Marble Lock

$45 Buy Link Hat Tip Comment

Paul Myers designed this replacement interior door knob which can only be opened by dropping a marble into its top. It’s made from 3D printed PLA, Airsoft and skate bearings. You can pick one up in his Etsy shop, Beta Things. We dig his business card embosser too.

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Marble Operated Door Knob

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