Take the lock locking knob or deadbolt to the locksmith local lumberyard or hardware store.
How to change door locks to fit one key.
This allows you to pull the door knobs off the door from both sides.
Having the combination changed is more affordable.
Begin by removing the screws from the door knob on the interior side of your door.
You ll have to remove the lock from the door for this option and bring the key that currently opens.
Rekeying involves realigning the pins and springs in the inner workings of the lock in.
Insert the pins and reassemble the lock dump out the old pins insert the new key and use tweezers or small needle nose pliers to match the new colored pins to the color code on the special instruction sheet.
In some cases door latch plate mortises might need to be cut or enlarged.
If you have a window in or next to the door a lock with key cylinders on both sides is preferable as long as local codes allow and you keep a key within reach.
Normally how they work is you open the door and insert the new key and then insert a setting pin to reset the lock and the combination pins will use the new setting.
If you are adding something like a deadbolt you will need to cut a hole with a hole saw which is a large drill bit.
I don t recommend the you change it locks too many ways to screw them up.
Prop the door slightly open.
I am a locksmith with 35 years experience.
Slide the exterior half of the doorknob off while leaving the interior half of the doorknob in place.
Once the new pins are in reverse the steps to reassemble the lock.
Using a template that should be in the box with the lock you tape it to the door and drill the hole.
In apartment complexes this is now the most common way of changing locks on a door.
This is a high tech solution for your home to allow you to use a keypad at the lock or use your alarm system or wifi to open and close the lock.
When drilling you want to drill half way through from one side and half way through from the other side.
Wifi locks or keypad locks.