Notes on Picking Pin Tumbler Locks > 자유게시판

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This pick is a Peterson "Hook" with a plastic handle. The picks are available with blue plastic handles. While the LAB picks are quite nice, their small size makes them rather delicate and easy to bend or break, especially as you're learning how much lifting force and torque are involved. Using the five or six pin lock, find a pick that lets you locate and lift each pin across its full range of motion without disturbing adjacent pins too much. The selection of the torque tool is just as important as that of the pick, but, again, commercial pick kits often fail to include a sufficient range of sizes and designs to allow good control and feel across the range of common locks. It is important to develop a "mental image" of the internal state of the lock, the locations of the pins and your pick, etc, as you manipulate the pins.

That means being able to reliably pick the lock, both clockwise and counterclockwise, and being confident that you know how you opened it. Figure 3. Holding a pick. This style of tool is especially useful for holding open automotive locks that have spring-loaded dust covers. It can become very tempting to "cheat" a bit here and move ahead the moment you get a difficult lock open the first time, but that will only make the rest of the course that much harder. Move your fingers close to the keyway as you do this. See Figures 3 and 4. Once you're comfortable with the AR1 keyway, move on to the "Ilco SX" keyway locks and repeat the exercise. See Figure 5. With the tool in the keyway, apply torque and try to turn the plug. Try all your different picks. The Peterson picks are more sturdy, at the expense of being bulkier (but they still fit easily in many of the keyways you'll be picking).

While there are literally thousands of different keyways in commercial use in the United States and thousands more abroad, these four give a fairly representative sample of the different kinds of wardings (and pin manipulation problems) you are likely to encounter in common (non-high-security) locks. Falle-Safe Security makes a set of vertically-oriented two-prong torque tools designed to fit snugly in a range of different pin tumbler keyways. Several positions are possible; here a vertically-oriented torque tool is used at the top of the keyway. I usually find that the very top of the plug, directly in front of the pins, to be a good place to apply torque, but you have to be careful that the tool doesn't touch the front-most pin. It is usually possible to insert the torque tool at either the top or bottom part of the keyway. Insert the tip of the tool in the keyway, allowing enough room for your pick to enter and manipulate the pins.

You should be able to confidently find each pin and push it all the way up, without jamming the pick against anything or moving other pins. Find the ward directly under the pins and pivot the shaft of the pick at the font of the keyway. 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. 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. In addition to making picking more difficult, secondary locking mechanisms are sometimes also intended to make it more difficult to reproduce unauthorized copies of keys. The picks are made by Peterson International (a locksmithing tool vendor in upstate New York with manufacturing facilities in South Africa). It is not clear what some of these picks are intended to actually do. What are the 8-ball pool rules? Pool involves a table with six pockets.

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