Notes on Picking Pin Tumbler Locks > 자유게시판

Picking lever locks generally requires different tools from those used for pin tumbler locks, and high security lever locks often require specialized purpose-made tools. Each lever has a cutout, called a gate, through which part of the locking bolt, called the fence or the stump, must travel. Right: Side view, with part of the shell and plug cut away to expose the six pin stacks. Pin stacks with partially set spool and mushrooms, on the other hand, will feel a bit different. When the pin stack truly sets at the shear line, it will feel like an ordinary set pin. It’s much more like the practice of medicine, as when you say: "I practice medicine." It means you do it every day. So you can be a scholar and practice meditation. If you can find a copy for sale, get it. However, it is worth experimenting with different rakes and raking techniques to find one or two that work well for you. Lock picking is useful and worth studying for its generality and simplicity. Few burglars can afford to risk exposure during the time required to pick even relatively easy locks, and unexplained possession of lock picking tools is often considered prima facia evidence of criminal intent.

The principles and skills of lock picking, once mastered, can be applied against the vast majority of commercial pin tumbler locks, and the basic tools, if somewhat unusual, are quite simple. It's hard to learn these skills all at once on off-the-shelf commercial locks, but that's what many people who try to learn lock picking end up doing (before giving up in frustration). Two tools -- one for each function -- are used simultaneously when picking a lock. Here the plug has been turned slightly toward the camera, so that the tops of the pins in the plug are visible. Picking tools are designed to perform one of two basic functions: manipulating pins and turning the plug. Good tools are important, to be sure, but once a few basic tools are available the student of lock picking is usually better off investing in new locks on which to practice rather than in new picking tools. From the attacker's perspective, too, lock picking is rarely the most efficient, most economical, fastest, or easiest method of entry. For example, the method it calls "scrubbing" is called "raking" by almost everyone else (it's not something I suggest you spend much time on, at least at first, What is billiards by the way).

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. This is called a mokugyo, and it’s a sort of wooden drum which, as you heard, makes an extremely effective noise that can be heard for a very long way. However, because the precision with which locks can be manufactured is limited by physical processes, materials, economics, and usability considerations, exploitable weaknesses almost always exist in practice. Probably the best book I've found on picking locks is the Gerry Finch Manual of Lock Picking, which unfortunately appears to be out of print as of this writing. Pin tumbler lock picking consists of raising the cuts on each pin stack to the shear line, one by one, until the plug turns freely. Picking these locks involves putting torque on the locking bolt and raising the gates to the correct height.

The basic algorithm for picking locks is remarkably simple: - Apply a small amount of torque to the plug. You'll probably end up deciding that the small Peterson hook works best, but experiment with all the picks. The pick design it calls a "rake" is called a "hook" by the rest of the world (it's the kind of pick you'll be using most). It's much easier to learn each skill in isolation, using locks specifically set up for the purpose. These imperfections are very small -- as little as .0001 inches in some cases -- but they are what allow us to manipulate ("pick") locks open without using the correct key. Picking depends on weaknesses in the implementation of locks -- small manufacturing imperfections -- rather than fundamental, abstract design flaws that would be present no matter how carefully made the locks might be. In the prison in Vietnam, in talking about the present and the past, the two prisoners, one experienced in meditation and one not experienced in meditation, their experience of presence is going to be entirely different. When the energy transfers, the top pin moves up while the bottom pin slows down, and a gap is created between the two pins.