Home High Security and Challenge Locks (1237) Jacob’s Keyway Trick Challenge

(1237) Jacob’s Keyway Trick Challenge


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My vises are made by Panavise, a U.S. Company.  The one with the wide jaws is the model 350.  The smaller one is the model 301. Both have the 312 Base mount – www.panavise.com



  1. I have two observations…
    The first is the obvious one that he needed a longer driver pin or spring in #1. This would have made picking with top of the keyway tricky while bumping into the tensioner. Especially with a strong spring and a high cut key pin.
    The second is I think the wafers he added would block a bypass attack. Or at least drive you nuts trying.

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