Doing a project with locks, and need some help.

[sams choice]

I am using a kw1 keyway, and I want to know of a way bind the pins so that when a key is entered into the keyway, it will permanently lock the key inside of the lock. So I am basically asking, what could I do to the pins to make it jam, and make the key not able to be removed from the lock.

[lunchb0x]

you can do this by modifying the key, file down one of the ramps so the pins will catch on the key, like in hte picture I added where the ramp on the first cut is filed off, some customers would ask me to do this for their screen door locks.

[sams choice]

you can do this by modifying the key, file down one of the ramps so the pins will catch on the key, like in hte picture I added where the ramp on the first cut is filed off, some customers would ask me to do this for their screen door locks.

Thanks for the speedy reply, but without messing with the key. I would like any key that enters the lock to be permanently jammed until the lock is dismantled.

[lunchb0x]

well I dont see how you would be able to do that anyother way than what I said, why does it have to be that an unmodified key will get stuck? is this for if someone walks up to your door and tries a key and it gets stuck in the lock, there for you know that someone other than you has tried to use the lock?

[sams choice]

Haha, nothing like that. I guess let's say it is for the knowledge of what gets a lock jammed in the first place. What happens inside the lock that causes this malfunction.

[lunchb0x]

even if you had bottom pins with a flat bottom you would still be able to pull the key out because of the ramps on the key, its only really when the key gets worn out and the ramps arn't as smooth that the key will get stuck in the lock, but even then with a bit of wiggling the key can still be removed

[sams choice]

In some cases, the bottom pins become warped and bend a little. This causes a jam at the shear line. I am looking to emulate this encounter.

[lunchb0x]

so do you want it so every key other than yours get jambed in the lock? or all the keys that enter the key way?

[n2oah]

In some cases, the bottom pins become warped and bend a little. This causes a jam at the shear line. I am looking to emulate this encounter.

That's not usually something you can emulate. Bumping the lock many times may achieve a warped effect on the bottom pins, but I'm not sure that's the same effect we encounter in everyday lock jams.

[mr_chris79]

In some cases, the bottom pins become warped and bend a little. This causes a jam at the shear line. I am looking to emulate this encounter.

OK, do you want the simple answer? use a completely new never before seen keyway designed by yourself so that no other keyblank on the market will fit....otherwise it will jam

[sams choice]

In some cases, the bottom pins become warped and bend a little. This causes a jam at the shear line. I am looking to emulate this encounter.

OK, do you want the simple answer? use a completely new never before seen keyway designed by yourself so that no other keyblank on the market will fit....otherwise it will jam

That is not helpful by any means...

I was thinking of drilling holes to create two chambers so that once the key is turned it will spring down and lock onto the core so that it will not move the core anymore. But then comes the problem of having the key locked in place. even a size 1 tumbler will be able to move the key out. I suppose a simultaneous locking mechanism that will lock both sides at once?

[lunchb0x]

so with your way it would only be a key that works the lock and can turn the plug that would get stuck, there for keys that wont turn in the lock would not get stuck.

[sams choice]

so with your way it would only be a key that works the lock and can turn the plug that would get stuck, there for keys that wont turn in the lock would not get stuck.

So far yes. Meaning not all kw1 keys will become jammed in the lock. Just ones that have a 2 size and no 1's....basically meaning that the pin closest to the butt of the key would have to be a 2 or greater...

[mr_chris79]

In some cases, the bottom pins become warped and bend a little. This causes a jam at the shear line. I am looking to emulate this encounter.

OK, do you want the simple answer? use a completely new never before seen keyway designed by yourself so that no other keyblank on the market will fit....otherwise it will jam

That is not helpful by any means...

I was thinking of drilling holes to create two chambers so that once the key is turned it will spring down and lock onto the core so that it will not move the core anymore. But then comes the problem of having the key locked in place. even a size 1 tumbler will be able to move the key out. I suppose a simultaneous locking mechanism that will lock both sides at once?

You could do with a drawing explaining what your talking about as its hard to visualise what your thinking of, but there was no offence meant in my previous post my friend

Another way to trap the key once its been turned would be to have a deep cut in the middle of the key with all the other cuts being shallow, therefore once the plug is turned the deep cut pin will rest against the interior wall of the outer cylinder, making your key look like a sawtooth effect?

[sams choice]

You could do with a drawing explaining what your talking about as its hard to visualise what your thinking of, but there was no offence meant in my previous post my friend

Another way to trap the key once its been turned would be to have a deep cut in the middle of the key with all the other cuts being shallow, therefore once the plug is turned the deep cut pin will rest against the interior wall of the outer cylinder, making your key look like a sawtooth effect?[/quote]

Hahah i did not take it badly, just letting the obvious be known. Bad joke with another bad joke.