The basic pin tumbler lock should work ideally with only one key.
How to break a door lock without key.
To accomplish this you can either make use of raking or single pin picking.
Bend one of the paperclips and fold out the other one as straight as possible.
Older locks are typically easier to open without a key while newer ones can be a bit more tricky.
An angle grinder is a power tool that is highly effective for breaking u locks and most other kinds of locks.
Try to position the wrenches right in the middle of the vertical shafts of the shackle.
After some wiggling your lock will hopefully open.
For locks on houses and other types of doors the method depends on the type of lock.
Use a bump key.
Unlocking a house door without a key.
So in order to unlock a door without a key you will have to imitate the action of the key itself.
Apply pressure on the lock using knife and push it back in the door.
House door method 1.
Insert the knife between the space in the door and the frame where the lock is situated since knives are thin it should easily slide in between the lock and the frame.
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You practice and feel comfortable with your angle grinder before using it on your u lock.
Before you actually attempt to break the lock give the handles of the wrenches a quick squeeze to make sure that they.
When you insert the bent paperclip stick the straightened paperclip beneath it and move it around.
If they re too high or too low.
If you have two paper clips on you the process will be that much easier.
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You may also need to tilt the knife a little till you find the suitable angle for moving the lock.