Notes on Picking Pin Tumbler Locks > 고객센터

The multiple peaks allow several, or even all, pin stacks to set simultaneously. With practice, even this keyway will eventually seem easy to maneuver. If just one pin sets at the "other" shear line, the lock will not open even though all the pin stacks are picked. Finally, lift the pin that sets first very high before you apply torque. 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. Vary the amount of lifting between strokes but do not force the pins, lest you overset them. As you work with locks more populated with pins, what is billiards it becomes increasingly critical to avoid accidently disturbing the pins adjacent to the one you're working on. To determine which pin stacks have these pins, gently push up each "set" pin. 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. Pin stacks with partially set spool and mushrooms, on the other hand, will feel a bit different. You'll probably want to use one of the smaller LAB picks, although the small Peterson hook will sometimes do with care and practice.

You may find one of the smaller LAB hook picks to be easier here than the larger Peterson picks, although you can usually still pick this keyway with the small Peterson hook. Very "wavy" rake picks can simulate various key profiles, and can be surprisingly successful at opening poorly-made locks. There are many different styles of raking, some of which entail the use of special rake picks specifically designed for a particular technique. Alternatively, you can use the rounded edge of an inverted hook pick instead of a special rake pick. While pins are usually set by raising the cut from the plug to the shear line, they can also be picked by first oversetting the cut to within the shell and then lowering it to the shear line. These pins falsely set before they reach the shear line. An alternative technique, which I have not seen mentioned in the literature, is to first determine which pin stacks have security pins and which have regular pins (by picking normally and noting which stacks are false set). High security locks are more routinely installed in Europe than they are in the United States.

It's important to be able to distinguish among these four states. Now release torque and try again, but this time lift the pins as little as you can when you test them, while still distinguishing between the two states. However, it is worth experimenting with different rakes and raking techniques to find one or two that work well for you. If you can pick all (or at least most) of the locks on this board, you are well prepared against the typical locks installed in residential and commercial buildings in the US. Repeat this exercise until you can reliably distinguish between a binding and a non-binding pin with very little lifting. So far, we've been picking locks "a pin at a time," with a single pin stack set at the shear line in the sequence dictated by whatever misalignments are present in the cylinder. Raking, in contrast, is a class of picking techniques in which several pin stack may be set at the shear line simultaneously. Practice distinguishing between the pin states and then finish picking the cylinder. For this exercise, you'll use your torque tool and pick on the two pin lock to put the pins in each of these states to learn what they feel like with your pick.

You may want to use one of the smaller torque tools as well, or put your torque tool in the bottom part of the keyway instead of the (curvy) top. Now re-apply torque and set the first binding pin. This will overset the pin. If you inadvertently push a pin up too far or are applying so much torque that more than one pin is binding, you may have an overset pin instead. Much of lock picking skill depends on testing pins stacks for the purpose of finding which to push up next and assuring that no pins are overset. Better quality locks are less forgiving of too much torque. These skills become very important when picking better quality locks, so take your time here. 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.