How a Wind Up Music Box Works Explained By Bill Hammack's Bill reveals the engineering inside a mechanical movement. He describes details of the comb, spring, gears, and governor that drive the mechanism, and shares some history of early music boxes. Outtakes are included at the end of the video. By: Bill Hammack's Youtube Channel: Engineerguy https://goo.gl/at6MZB | Music Box Attic

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