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What is usually the first step in the process of rekeying a lock?

  1. Remove the plug

  2. Change the cylinder

  3. Install new pins

  4. Measure the keyway

The correct answer is: Remove the plug

The first step in the process of rekeying a lock involves removing the plug. This action is crucial because the lock's plug houses the pins and the keyway, which together determine how a key operates the lock. By removing the plug, the locksmith gains access to the interior mechanisms of the lock. Once the plug is removed, the locksmith can then proceed to change the pins to match a new key or reconfigure the cylinder as needed. This step sets the stage for the rest of the rekeying process, as the lock cannot be altered without first accessing the core components housed within the plug. Therefore, understanding this initial step is essential for anyone looking to effectively rekey a lock.