SPARE KEY DUPLICATION

It is almost always cheaper to make spare key based off of an existing one rather than making one from scratch. That is why if you are down to your last car key it is always a good idea to duplicate another one and have a spare key available. It is normally cheaper to duplicate a key rather than create one once all your keys have been lost because a large chunk of the cost associated with creating a key from scratch is obtaining the information about the depths of the cuts of the key. If you already have a spare key the depths can usually be obtained simply by using a machine or if you are really good, your eyes, to see the depths of the cuts of the current key and use that information to duplicate a new one.