Notes on Picking Pin Tumbler Locks

Notes on Picking Pin Tumbler Locks

Patti 0 2 07.24 02:19

The most common security pins are the "spool" and "mushroom" top pin designs, which are thinner in their mid-section. These locks are no more or less inherently secure than standard pin tumbler locks, although the external exposure of their pins makes picking them (and designing sophisticated picking tools for them) somewhat simpler. These are typically pin tumbler locks, but their orientation is "upside down" with respect to the convention for locks installed in the United States. Electronic locks, of course, do not have mechanical tumblers and are so not vulnerable to many of the physical manipulations exploited in tradtional lock picking. With this wardrobe, you (your sims, that is) don't have to leave your (their) home to get new pajamas, formals, swimsuits, or winter clothing. Although I don't usually like hacking stuff to get it for free, I think the clothes are a noble exception. And you know he might even rush over without putting all his clothes on, as smitten as he is with the ladies-who-can't-cook down the street. Over time, accumulate a varied collection of practice locks, and study different lock designs whenever you get the opportunity. Note that excessive raking with any of these techniques will tend to overset pins, so be prepared to release torque and start over from time to time.


However, note that because the tumblers are a single piece, sawtooth raking, snap guns, and bump keys are not effective against them. Sawtooth rakes, such as the Peterson "Ripple" and the Falle-Safe rakes, have 5 or more very acute peaks along the length of the pick's edge. There have been reliable reports that people with Superstar can access all the features - but since I, personally, myself, do not own Superstar, I can not qualitatively say empirically that it works 100%, even if it does. Because there are two independent shear lines, there is no way to control, or even tell, at which shear line a given pin stack sets. In fact, master keyed pin stacks are easier to pick than those that are single-keyed; there are two chances to lift a cut to the shear line. In a lock with six pin stacks with a uniform chance of a pin setting at either shear line, the probability of a picked lock actually opening is only 1/64. Picking techniques for these locks involve the use of special torque tools designed to put torque on only one of the two concentric plugs.


Alternatively, you can use the rounded edge of an inverted hook pick instead of a special rake pick. Now release torque and start over, taking care to pick all the pin stacks with spool/mushroom pins while leaving at least one regular pin stack unset (this will require a light touch and good sensitivity). As with pin tumbler locks, because the levers, gates, and fence are slightly out of alignment, it is usually possible to raise and pick the levers one at time. It involves asteroids, like the above method, only instead of direct impacts, this time we just steer them past the Earth, allowing rock and planet to exchange a little momentum, with the result of an Earth moving on a slightly different track and an asteroid moving on a significantly different one. To neutralize a partially set spool or mushroom pin, reduce torque and push the pin up, allowing the plug to rotate backward a bit as you do. The name comes from the resemblance to an empty spool of thread. The first sign of spool and mushroom pins is that the lock will appear to be picked, but will only turn a few degrees.


See Figure 6 for an example of a spool pin. See Figure 7 for an example of a serrated pin. Figure 7. LAB Serrated top pin. These locks must be picked at both the top and the bottom, sometimes alternating between them. Tubular locks suffer from the same manufacturing imperfections as other locks and so can be picked with essentially the same techniques. If just one pin sets at the "other" shear line, the lock will not open even though all the pin stacks are picked. The usual scheme for master keying involves using more than one cut in some or all pin stacks (this is accomplished by adding additional pin segments). However, it is worth experimenting with different rakes and raking techniques to find one or two that work well for you. High-security locks often incorporate one or more secondary locking mechanisms beyond that provided by the conventional pin tumblers. Picking these locks involves putting torque on the locking bolt and raising the gates to the correct height.



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