The machinery that is used to mass produce lock cylinders is usually very accurate but small manufacturing variations still exist. Manufacturing tolerances and keeping the pins at the shear line. Thanks to tiny errors in lock manufacturing, this is not as difficult as it seems. The trick is to keep each pin at the shear line while we raise the next pin to the shear line. In order to pick a lock, we have to raise each of the pins to the shear line and turn the plug as if we had a key. With the pin breaks lined up at the shear line, the bottom pins are all in the plug and the top pins are all in the cylinder housing and the lock is free to turn. When the proper key is inserted, the cut side of the key lifts each pin stack so that the break between the bottom and top pin lines up exactly at the shear line. The pins pass through this shear line and “pin” the plug to the housing preventing it from turning. In fact, this is why a lock cylinder can’t turn without a key. The shear line is the imaginary line where the pins pass from the plug into the housing. Each pin stack (one stack of pins) contains a bottom pin, a top pin, and a spring (not shown) above the pins to press the pins down.Ī very important concept in learning to pick locks is known as the “shear line”. The first step in learning to pick locks is to understand how a lock works.Ī pin tumbler lock consists of a cylinder housing, the plug (the part you insert the key into) and a series of pins. Picking a lock is done by manipulating the locking mechanisms inside the lock. Follow the directions below to learn how to pick locks. Remove all pins from your cylinder except the first two pin stacks closest to the key hole end of the cylinder. Attempting to pick a lock for the first time with full cylinder is possible but learning will progress much faster with fewer pins. After you have picked a one or two pin cylinder a few times you can quickly progress to more pin stacks. The easiest way to learn how to pick locks is to start with a lock that only has one or two pin stacks in the cylinder. Only through practice can you gain skill. Like driving a car or playing a sport, having the knowledge of how locks are picked is just the start. Learning how to pick locks is surprisingly easy.īecoming proficient at picking locks takes practice.
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