A key duplicator can make a copy of whatever key you have on hand. It isn’t illegal to own your own key duplicator because you can only copy a key that you have, not someone else’s. Some places consider key duplicators as lock picking tools, but they really aren’t. These machines will help you copy whatever keys you like. Just make sure to wear proper protection. Small pieces of metal fly around dangerously when a key is being cut.
On one side of the machine goes the key you want to copy; on the other, the key blank for the new key. The key blank should be positioned on the cutting side of the machine, and the key you want to duplicate should line up with the machine’s alignment tool. Your key duplicator may have an alignment bar that ensures both keys are evenly positioned. This shouldn’t be confused with the alignment tool, which is a piece of metal that regulates the cutting blade.
Check your machine’s calibration before starting the process. Put an even piece of metal across the key holder on the machine. Make sure that both the cutting blade and the leading edge of the alignment tool are even. You can then fasten the keys in place with vice grips. The keys’ position can be adjusted so they properly line up with the cutter and alignment tool.
Once the process begins the keys will move along the machine until the cutting is finished. You will wind up with two keys cut identically in the end. You should sand your new key to remove any residual metal burrs. After the burrs are gone, both keys should fit in the original lock.