Guide to Lock Impressioning

January 10 / 2021

Guide to Lock Impressioning

Ever been stranded because of a lost key and wish to know the fastest lock picking technique? Here you go as we present the best lock picking method called ‘Lock or Key Impressioning’. With the knowledge of this technique, you can conveniently pick your lock as well as create a working or spare key. Impressioning is the process of inserting a blank key into the lock several times to create tiny little marks on a blank key. Then you file the marks and take more impressions. This process continues until the lock is opened with the impression key. This technique is useful when you do not have a nearby locksmith in Colorado Springs CO that can come to your aid when you lost the keys to your home, car, or cabinet locks.

Furthermore, this technique is also effective when you are dealing with standard pin tumbler locks. It is difficult to be used on locks that are a little more complex like the high-security locks or disk detainer.


This technique should only be used responsibly! Do not go ahead to impression a lock that isn’t yours, or apply the technique on a lock that you haven’t been given permission to impression. This technique MUST be used on your locks or on a neighbor lock with the right permissions.

However, if you don’t have time to learn the technique and you have an emergency lost or broken key situation. Do not hesitate to call the expert locksmith from Colorado Springs Locksmith. Our locksmith will arrive at your location and will use a blank key and a few tools to impression your locks. 

Required tools for Lock Impressioning:

  • Key Blank
  • Key Grip
  • Magnifying glass
  • File and
  • The lock

With the above tools and the right knowledge of the process, you can successfully impression a lock. These tools are not scarce, you can get your hands on them at your local hardware store.

Let’s break down the process of lock impressioning.

Prep the Brass Key Blank

For starters, impressioning a key is never an easy process, it’s rather intricate and it requires patience. After gathering the required tools, the next step is to prep the brass key blank. However, we recommend, as a beginner, you need to have at least 5 key blanks on hand. The reason to have more key blanks is to enable you to practice and get comfortable with the process.

Brass Key Blank Insertion

Get closer and insert the brass key blank into the keyway of the lock. With the aid of a key grip, you need to apply a suitable amount of torque to the key after it is inserted into the lock.
Then, the next step is to mark the brass key blank by using any of the three methods that are commonly referred to as pulling, rocking, and tapping.

The pulling method is the most popular one and it involves inserting the key and applying the right amount of tension so that the pins bind effectively.

File the Key Blanks

Use the magnifying glasses to identify the pin marks made on the key blank during insertion.
Gradually, file away at the marks that have been made on your key blank. Make sure you file parts of the key blank where the appropriate marks have been made. 


You need to repeat the above processes until the key can match the groove depths of the lock. If you are confused with any of the steps, feel free to add a comment or contact the experts at Colorado Springs Locksmith for further clarifications.


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