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263936 items (0 unread) in 27 feeds

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4 items tagged "mechanical device"

Related tags: hacks [+], refurbing [+], piano [+], old piano [+], musical [+], chris [+], baby grand piano [+], baby [+], video [+], projector [+], pendulum [+], paul [+], movie projector [+], movie [+], misc [+], lissajous curves [+], lego technic [+], lego [+], harmonograph [+], day [+]