I have learned many things from here about re keying and locks repair. You must share some thoughts about window and door security, whenever you go out somewhere for vacation be sure to unlock your window and doors properly so that no one will be able to enter in your home.Also , If you have a sliding glass door, place a pole in the track, which will prevent the door from being forced open.
This video has given much practical knowledge about locks , keys , door knobs , hinges etc. It will be very helpful for the new locksmith to learn such important fact about locks and keys from this video.
Thanks for sharing the detailed explanation of making duplicate keys. I will wait for your new update on this topic.
Action Lock & Key, Inc.