[1543] Legal Department Keyway Design?
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[1453] VERY Clever “Loki” Puzzle Padlock Solved
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[478] Vintage "Super Secret" Bulgarian Combination Lock
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What if we made a camera that sees in reverse?
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The Forbidden Knowledge of Washers
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Bu Harika Avuç Taşlama Fikrini 50 Yaşından Önce Neden Bilmiyordum?
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I Saved an Electron Microscope from the Trash
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The Man Who Almost Broke Math (And Himself...)
10:18