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Key Duplication Question

Information about locks themselves. Questions, tips and lock diagram information should be posted here.

Key Duplication Question

Postby metroid9824 » 6 Jun 2008 20:41

Is it possible to duplicate a key by getting a key blank, and tape the original key to the back of the blank, and cutting the key. I don't have a key cutter, so is there another tool I could to cut the key?
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Postby Buggs41 » 6 Jun 2008 21:30

That is one way you can duplicate a key. Only problem is if you file any deeper on the original key, it will no longer operate the lock.
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Postby bumber » 6 Jun 2008 21:51

Buggs41 wrote:That is one way you can duplicate a key. Only problem is if you file any deeper on the original key, it will no longer operate the lock.


and for some locks you have to cut the key really close so you may not be able to without tearing up your blank... :(
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Postby Trip Doctor » 6 Jun 2008 23:09

If you have a caliper, it would help a lot , because .. you know, it's kinda hard to tape to the nearest 100s of an inch. :P
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Postby MacGnG1 » 6 Jun 2008 23:15

wont u most likely also cut into the original if u aren't careful?
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Re: Key Duplication Question

Postby globallockytoo » 6 Jun 2008 23:55

metroid9824 wrote:Is it possible to duplicate a key by getting a key blank, and tape the original key to the back of the blank, and cutting the key. I don't have a key cutter, so is there another tool I could to cut the key?


Actually in Malaysia (Kualar Lumpar), I know that locksmiths on the street (peddlars) actually do not have machines. They get a blank, line it up side by side with the original, put vise grips (locking pliers) on the head and use an impression file. Finishing by using needle files.

I remember seeing it done, it is quite unique.......so Yes is the answer to your question.
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Re: Key Duplication Question

Postby WOT » 7 Jun 2008 10:31

metroid9824 wrote:Is it possible to duplicate a key by getting a key blank, and tape the original key to the back of the blank, and cutting the key. I don't have a key cutter, so is there another tool I could to cut the key?


Yeah, but do it with a key to an extra padlock you don't really need or the like just so you can show off you can do it.

It'd be stupid to do it with a key you need. If you are doing this because you need the duplicate, why not just have a hardware store or a locksmith do it for you since you'll have to make the same trip to buy that blank anyways?
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Re: Key Duplication Question

Postby jimb » 7 Jun 2008 10:44

This is one of the lessons in the FB Course. It's easier to do if you have a tear drop shaped file such as a pippin file. Take a marker and color the top of the key blade and slopes of the original, that way you can tell if you are hitting the original with your file. Go slowly.

Be careful not to insert the key in the lock if the slopes are too steep or you will have a heck of a time getting it out. As already mentioned a caliper makes it a lot easier.
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Postby metroid9824 » 7 Jun 2008 16:42

What if I traced the key onto a piece of paper, and cut the paper out, and atteched it to the blank. I wouldn't have to worry about cutting the original. Would this also work? Thanks for all of your replies. I do have a vice/caliper.
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Postby globallockytoo » 7 Jun 2008 18:33

metroid9824 wrote:What if I traced the key onto a piece of paper, and cut the paper out, and atteched it to the blank. I wouldn't have to worry about cutting the original. Would this also work? Thanks for all of your replies. I do have a vice/caliper.


Tracing will make the key have shallower depths. If there is a lot of tolerance in the lock, this could work....but not advised.
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Postby jimb » 7 Jun 2008 18:49

metroid9824 wrote:What if I traced the key onto a piece of paper, and cut the paper out, and atteched it to the blank. I wouldn't have to worry about cutting the original. Would this also work? Thanks for all of your replies. I do have a vice/caliper.


This would get you spacing correct and you could use you caliper to get the correct depth. The depth is the most important part of the cuts. You can be off on the slopes and the key will still work as long as the depths are correct. You just need to make sure you slop the cuts enough that the key won't get stuck. If you slope them too much the key will still work, too little and you will have a problem. The cuts can be wider than the original.
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Postby metroid9824 » 7 Jun 2008 20:04

What exactly do you mean sloping the cuts?
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Postby jimb » 7 Jun 2008 20:45

metroid9824 wrote:What exactly do you mean sloping the cuts?


Image

If you don't get enough angle on the slopes the key will not enter or exit the lock, depending on which side of the valley is too straight up and down.
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Postby metroid9824 » 7 Jun 2008 20:49

Thank you, you all have been a great help.
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Postby metroid9824 » 7 Jun 2008 20:55

Thank you, you all have been a great help.
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