[1295] Unbreakable, Unpickable, & Bulletproof? (TED Tooling’s Unusual Lock)
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7:01
[1293] PacLock’s Cone-Shaped Drill Defense
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15:14
Making another pickproof lock (but better)
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21:29
What if you just keep zooming in?
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12:05
Wirtz pumps are really clever
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28:56
The clever feature that makes cheap heaters safe — and why they're actually dangerous
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5:32
[1388] The Best Built Deadbolt Ever? Easilok
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31:32
Possibly The Greatest Puzzle Box Ever Created
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8:35