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#8238 What type of people/professions use bump keys?

Posted by LogiGoi on 07 January 2016 - 12:52 PM

Using bump keys doesn't require a profession...it is already by default that locksmiths are the ones making it after all it was their job and skills that put the bump keys into existence...whatever your profession is, you can use a bump key,...just don't make using bump key to other people's door lock your profession...

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#6970 Bump Keys vs Locks

Posted by redcity on 02 January 2014 - 06:27 PM

I would say that the biggest part of locks can be opened using bump keys except for the very expensive ones made for special buildings they would have deadbolts and trap pins. Search for non-bumpable locks if you are willing to buy one and yes they are certainly safer.

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#6950 Making your own bump keys

Posted by LAlocksport on 02 January 2014 - 04:43 AM

So we can all agree that it's better to buy one :) Except if you somehow don't own equipment for producing bump keys.

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#4622 History Of Lock Bumping

Posted by Customer Support on 20 April 2008 - 12:57 AM

History of Lock Bumping

How did the fascinating technique of lock bumping get its start? When did this lock bypass system begin to come to the attention of the public? What’s that, anyway? Let’s explore the interesting history of lock bumping and look at a few important details pertaining to it.

Lock bumping has been around for a long time. Some estimates place the beginnings of lock bumping to about 50 years ago. This special technique allows a special type of key to be used in any lock of the same type. Most of the locks that are currently being manufactured are susceptible to the skilled use of a bump key.

Tumbler locks are the most widespread style of lock in use today. The system of pins is quite simple. A series of pins are spring-stacked to hold the rotating bolt of the lock mechanism in place. Because the pins are all different lengths, one usually uses a custom cut key to open the lock. The grooves on the key “tickle” the pins and lift them out of the way enough to let the bolt slide away, resulting in an unlocked door. However, a bump key can do the same job even though all its grooves are the same depth.

Public knowledge of lock bumping really began in the 1970’s, when Danish locksmiths distributed a method for bypassing the tumbler lock mechanism. They would tap on the side of the cylinder and simultaneously press the lock plug (in our case, one would press the back of the bump key). The vibration would cause the pins to become loose; once this happened, the lock plug could be removed easily.

The advent of bump keys came much later. Surprisingly, they were not even considered a security problem until 2002 or 2003. The German media was the first to pick up on the possible hazards of lock bumping keys. Other organizations published carefully considered reports on the uses, techniques, and hazards of lock bumping. Papers have also been written about the possible legal problems connected with bump key usage. Although in many States a bump key is considered by law to be a “burglary tool”, this is no reason to avoid them. This law is not going to harm you as long as you use the bump key for legitimate purposes. Currently, there must be proof that there was intent to use the bump key in a burglary before you can be charged with anything.

Lock bumping can be a beneficial skill. It is an easy way to get back in if you are locked out of your home or office. You can make a bump key for free with a simple file, and it takes minimal training to learn how to use it. Don’t ever go through the frustration of being locked out of your own home (or your own personal safe) again. Learn how to use a bump key and practice until you know you can get past the tumbler locks in your home. One day, you’ll be glad you did.

© Copyright 2008 - www.BumpKeyForum.com
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#8189 "Evva Locks - even the best of companies occasionally makes mistakes"

Posted by TanVanMan on 05 January 2016 - 06:07 AM

They are called washers, extensively used around shoulders of keys while bumping, avoids breaking or damaging of lock while applying pressure on the key through bump hammer

Ahh.. Thanks for the info :-) 

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#8173 Is a Bump Hammer Really Necessary?

Posted by redcity on 04 January 2016 - 08:14 AM

With or without a bump hammer I think scratches cannot be avoided unless you're expert in bumping.  :-)

Exactly, its the same like going through the ring of fire without getting burned 

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#7723 Easiest way to make your own Bump Key

Posted by xcaliber on 12 December 2015 - 10:52 PM

Utilizing these qualities, you'll make your first cut utilizing the first esteem (key shoulder to first cut), then each resulting cut will be separated at equivalent interim utilizing the second esteem (separation between focuses). When in doubt, you slice to the indented line on the clear key. Then again, for more prominent exactness and enhanced adequacy of your home-made knock key, you'll most likely additionally need to decide the cut profundity, which is an exact estimation from the base of a slice to the base of the key (this data ought to likewise be given in your lock maker's profundity and separating aide). In the event that you don't have a precise cut profundity, you can for the most part slice to the indented line (never beneath!) and your key will likely work in many lakes.


It is essential that you ensure that the valleys in your key, don't go beneath the indented line on the key, furthermore, that the point of your slices are sufficiently shallow to permit smooth insertion and expulsion of your knock key from your objective lock. On the off chance that the valleys are too profound, you knock key will presumably not work. In the event that your values are excessively steep, you may harm the lock or you will be unable to expel the key from the lock once you've knocked it! Our expert knock keys are sliced by producer's predefined cut profundity with progressive valleys and tender crests.


Finally, once you've created all of the necessary peaks and valleys in your new bump key, you'll want to file a small bit off the tip and shoulder of the key (generally <= 1/2mm will suffice).

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#7579 More Bump Key Discussion

Posted by xcaliber on 09 December 2015 - 12:52 AM

Very informative group! Didn't realize there's a FB group for this forum smile.png liked it!

Me too ohmy.png !

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#6998 What type of people/professions use bump keys?

Posted by LockPickIt on 04 January 2014 - 01:20 PM

I'm guessing this would be too much of a hassle for firefighters.That is why they carry axes around, not time to be using anything but bture force to enter a room in flames.

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#6966 Can bump key lock door after the lock is picked?

Posted by redcity on 02 January 2014 - 06:16 PM

that's curious, I don't think it's possible .. Locking a door is much more complex than just unlocking it, and I wonder why would anyone need that anyway?

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#6932 sincerely curious.. what are the 'legal' uses for a bumpkey?

Posted by LockPickIt on 31 December 2013 - 06:13 PM

Like someone else said there are also forums on guns and criminals use them for bad things, the same goes for bumpkeys really.

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#6895 Bump Keys vs Depth Keys

Posted by Customer Support on 29 December 2013 - 01:01 PM

Great question! 


Bump keys are keys which have only been cut to the maximum depth.  While depth keys are cut from the most shallow depth all the way down to the deepest depth.


For example:


A Schlage SC1 has 10 depths (0-9).   A depth key (set) would have one key cut from depth 0 and then keys cut to depth 1,2,3.... 9.    Whereas a Schlage SC1 bump key would only have a depth cut to a depth of 9. 


Make sense ?

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#3311 this site in the news

Posted by theopratr on 18 May 2007 - 01:00 AM

I'm glad this helped... the majority of my responses are written right before bed in the early hours of the morning, and thus I often worry that I make little sense.

I'm trying to compile a new bumping resource about the physics and theory that goes into making it work, but between work and school, I am too often left with not enough time for my hobbies!

And besides, as the media tells us every time they do a special on bump keys that absolutely everyone who is reading about and/or buying bump keys online is a crook. Clearly, they really don't care about the specifics of why it works, just how to use it to break into their rich neighbor's house.

I swear that I'm not bitter in the least.
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#3147 Copying keys

Posted by theopratr on 29 April 2007 - 05:51 PM

There are several ways you could do it, but given the fact that you can only get your hands on the key for such a limited amount of time, it sounds like whoever owns the key isn't savvy to your copying it. I'm not passing judgement, but if you get caught, my good buddy Tyrone isn't the friendliest chap over several months/years. (He is known to most by the name "King Size".) Most locksmiths would probably not make the key for you, because if they do they are also liable to criminal prosecution for aiding in the keys unauthorized duplication.

That being said, you can do anything from a clay impression to tracing to an ultraviolet exposure of the key on UV sensitive paper. I've done them all, and it seems the more complex they are, the better they work, as you get more reliable details off of the key. Ivory soap also works in a pinch for impressioning. I used to key a nice sized slice of it in an old cigarette case in my tool box for making impressions of keys for which I didn't have a blank immediately available. Tracing doesn't work very well, but in a pinch you can do it by carefully measuring the difference in maximum depths traced and figuring out the spacing seperately.
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#2974 Master Lock No. 3

Posted by Wolvespire on 13 April 2007 - 08:50 AM

I thank you for your advice, and I certainly do not look forward to pummeling. I generally hate pummeling, especially when it's happening to me. In fact, ONLY when it's happening to me...:eek:
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#2936 Kwikset Deadbolt?

Posted by JshLnsctt on 12 April 2007 - 05:08 AM

Is a Kwikset Security Non-Pickable Deadbolt bumpable?
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#281 Picture of Bump Key In Action

Posted by mrwhite on 31 August 2006 - 11:04 PM

That's by far the best demonstration I've seen outside of actual video...kudos to whoever put that together...
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#2558 True or False.

Posted by BLK on 17 March 2007 - 04:16 AM

Thanks for the info. No more WD-40 in locks for me.

You can use it if it is a last resort, can't find the good lube because the van needs cleaned out and reorganized, etc. If I get in a pinch or if the lock is going to be thrown away after it is opened, then I will use WD-40 because in the short term it works well. Long term, it will degrease a lock and as mentioned above, it will cause excessive wear.

If a lock is weathered but in otherwise good condition (and I can find the TriFlow) I use WD-40 to penetrate and lubricate so I can get the lock 'broke loose' and pickable. After I get the lock open, I dissemble it, clean it and relube using TriFlow or any other good lock lubricant. The key here is a thorough cleaning out of the WD-40 and lubricating with a good quality lock lube.

By the way, I never use graphite on locks. Personal preference.
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#2462 Avatars

Posted by Bump123 on 12 March 2007 - 06:47 AM

Any chance of avatars coming back?
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#2429 I think I made my lock un-bumpable

Posted by Bump123 on 09 March 2007 - 10:06 AM

I was toying around with the whole concept of lock bumping, and newtons law of kinetic energy. So I took a lock that I have and bumped it, 37 out of 50 times.. Proving that the lock was very eaisly bummped. (Kwikset Deadbolt)

I then took it apart, luckly this lock had either an 8/9 pin in it, that I was able to replace with 2 other pins from another lock, (either 4/5 or 4/4 ) Don't really know, but I made sure they equaled the pin I removed.

I reassembled and tested with the real key. Worked perfect so I knew I had matched it up correctly. So I went to bumping.. and out of 50 tries, I was NOT able to bump the lock. I haven't tried picking yet. But to me so far this seems like a real easy and cheap fix as opposed to paying an arm and a leg for a lock thats classified as High Security and unbumpable...

Any comments suggestions, opinions are greatly appriciated.
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