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https://hackaday.com/2019/11/15/music-box-paper-punching-machine-settles-the-score/

 

Music Box Paper-Punching Machine Settles The Score

As soon as [pashiran] laid eyes on his first hand-cranked music box, he knew he was in love. Then, he started punching the holes for his first ditty. As the repetitive stress of punching heated up …

hackaday.com

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