Keys made from soft metal won’t last long. Success will also vary with the type of lock and quality of the key. Very little skill is required, and the learning curve is short. The success of the bumper depends on practice. Even this slight amount of motion is enough to allow the bump key to turn the cylinder, unlocking the lock. Bumping the key causes the pins to jump slightly. The "bumper" needs to bump the key hard enough to jar the pins, but not so much that the lock or key is damaged. While keeping rotational pressure on the key, it is then bumped into the keyway with the heel of the hand or with a device of some sort.
To use a bump key, the "pull-back" method is common. With this method, the key is inserted all the way in, and then pulled back out one notch. Once the pins are correctly aligned, the cylinder will turn and the lock can be operated. Keys operate by aligning tiny spring-loaded pins inside the lock. So, a full set of bump keys would include one for each of the major lockset manufacturers. A Kwikset® lock requires a bump key made from a Kwikset® key. The process of gaining entry using a bump key is called “bumping,” and it can be very effective.Īll the cuts on a bump key are made to the maximum depth, so any key blank can be made into a bump key. Pin-tumbler locks are the world's most popular lock, and these include exterior door entry locks for homes. Most people think that a locked door affords them security, but to anyone who knows how to use a bump key, a door lock is just a minor inconvenience.īump keys are keys cut to a special design that will allow them to be used for picking pin-tumbler locks.
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