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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...

  • redcity and TanVanMan like this

#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.

  • LAlocksport and TanVanMan like this

#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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#8181 A cool solution for a broken door lock

Posted by redcity on 04 January 2016 - 03:22 PM

Hahahahhaha, great infact its safer than many locks

  • TanVanMan likes this

#8168 Bump Key On eBay

Posted by TanVanMan on 04 January 2016 - 04:34 AM

Please be informed that reviews on eBay now are being sold to make the seller look more trusted. I suggest to get a recommendation from a friend if they have past order with the said seller. 

Right.. sad truth. And actually not just on eBay but most of the online products being sold. They pay for a good reviews and number of likes :-( Mostly but not all. There are still real and honest reviews out there. I do that as well. I mean when I like a certain product or shop I will take my time to leave a nice review. But most of the time I do reviews for those products or services that's NOT worth buying or using for me to somehow help consumers not to commit the same mistake that I had.

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#7705 Bump Key On eBay

Posted by LogiGoi on 12 December 2015 - 01:06 AM



Well, i think the bump key package comes with a small guide but still if you want to learn everything verbally then do give a try on customer support, hopefully they'll help, i prefer while doing bumping, stay online on this forum , we will help you in going through that adventure

and while you are online in this forum, just pray that the expert bump key users are online as well...hahaha

  • Customer Support likes this

#7563 Bump key and a bump hammer the two words that co-exist in my dictionary

Posted by redcity on 08 December 2015 - 09:43 AM

Well you have lost your original key and you have to unlock your closet and you don't have any clue how to fix this, then suddenly you call a friend and ask for help. He told you to get a bump key from a locksmith nearby your home. You did get that key and tried to unlock the closet but something went wrong, while trying to unlock the closet you happened to damage the lock as you were applying so much force on your bump key. These kind of mistakes are often ignored when talking about bump keys, but prior to use a key you must have a high quality bump hammer. Without a balanced bump hammer, there are chances that the pins of the lock get dislocated and you wouldn't be able to use it in future. So a balanced bump hammer is essential for the right bumping techniques.

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#6978 Bump Key Photos

Posted by xcaliber on 03 January 2014 - 06:06 AM

Mine looks something like this:



  • LAlocksport likes this

#6963 The Reasons Behind Learning to Bump Key

Posted by redcity on 02 January 2014 - 06:07 PM

I am learning this for the passion of it only, I was just reading an article about that and I thought Oh Well I want to know more so I found this informative forum .. and it's illegal where I live yes, or at least it's very risky.

  • xcaliber likes this

#6958 Beginners

Posted by redcity on 02 January 2014 - 05:59 PM

If you use it for the first time and use it wisely, it is very unlikely that it would be damaged. Maybe if you overdo it yes but just once I don't think so. Research well and I encourage you to practise.

  • LAlocksport likes this

#6931 Making your own bump keys

Posted by sallyshooter on 31 December 2013 - 04:34 PM

Most "make your own keys" requires to buy equipment for it though. When it comes to bump keys it's no different.

  • LAlocksport likes this

#6894 Using a bump key without damadging the lock is it possible?

Posted by LAlocksport on 29 December 2013 - 01:00 PM

It also depends on how crafty the user of the bump key is. Anyway if you are calm and careful, the lock won't be damaged.

  • Customer Support likes this

#6881 Just curious: what do you guys need lock bumping for?

Posted by Customer Support on 29 December 2013 - 12:39 PM

Hello there Red --


I've been personally interested in lock bumping for the past 8 years.  I first found out about it from a co-worker of mine. It seemed like a great way to simplify our job (lock out specialist / locksmith) so we decided to do some investigation.  It turned out that bump keys WERE a great way to unlock doors and figured that if we can make so well, why don't we sell them too?  And here we are today.

  • LAlocksport likes this

#3128 U-haul discus lock

Posted by Joe42 on 28 April 2007 - 01:04 PM

Some pics of the keys would help. Preferrably both sides and an end shot so we can see the shape of the keyway.

Taking clear closeup pics of anything is difficult without professional camera gear, but I've found a large magnifying glass, like those found in some swing-arm lamps placed between the key and digital camera really helps. Also plenty of ambient light and no flash usually helps.
  • BLK likes this

#3 Picture of Bump Key In Action

Posted by Customer Support on 08 August 2006 - 07:35 PM

Posted Image

The bump key is inserted into the lock.
An object (screw driver, tomahawk) is used to strike the key.
The pins are forced in an upward position causing the key to unlock.

With the right bump key, this whole process can take less than 5 seconds.

Picture from deviant... not us. (no copyright was included)
  • lorenano11 likes this

#2958 EASY, QUICK and ACCURATE way for filing bump key shoulder/tip

Posted by PhreeX on 12 April 2007 - 04:30 PM

I made my first set of keys from blanks and now I am waiting to get my order from bumpkey.us (highly recomended btw) .. I ordred the set of 11 keys ... now, as like everyoneelse that either makes their own set, or ordered them, you need to file the shoulder down (or else you can't, well, BUMP the key) ... using something as simple as a pair of vice-grips and a $2 file will work but for speed, accuracy and easy I found using a Dremel Motor Tool with a round, flexible filing wheel can make for a perfect, quick and acurate reasult ...

I mention this for filing the shoulder only, as for making your own set, that is up to you for how you wisdh to do it, I used a vice and metal triangle file on a key blank, and it works, but still, i'd rather just wait for my new set of 11 keys to arrive ...

Just throwing out that advice for anyone that needs to file down their shoulder (and tip but you don't always have to) and has a Dremel Tool ....

  • BLK likes this

#2549 Hey guys

Posted by Kristic on 16 March 2007 - 12:01 PM

Should we send flowers to the funeral?

Hah, Actually, just send a replacement :-p

No, It sucks, but I wanted to upgrade anyway, I think I may get a new motherboard aswell.
  • theopratr likes this

#2450 I think I made my lock un-bumpable

Posted by theopratr on 11 March 2007 - 06:03 PM

As usual, my money rests with BLK. However, I can see how your situation is possible.

As a Physics major, the energy transfer when using bump keys is an engaging look at a real world problem. By replacing a bottom pin corresponding to a depth 8 with two depth 4 pins, you simply introduce the possibility of the energy transfer being "messy", or simply inefficient.

When the peak of the key strikes the bottom most pin, the energy is (ideally) transferred in a vertical direction. This vertical transfer is most efficient if the angle of the peak on the key is forty-five degrees relative to the motion of the key. Any less than this may not "push" hard enough to jump the top pin high enough, and any more than this is transferring more energy in a horizontal direction, forward through the pins as opposed to up into the top pins. This is true regardless of the number of pins encountered before the top pin.

The most elegant representation of the motion that is occurring can be found with a Newton's cradle. (The five balls of similar mass suspended in series on wires.) When you drop one of the balls on the end, it impacts the remaining four balls, but only the last ball is pushed away. In a normal lock with a single bottom and top pin for each pin position, you have a Newton's cradle with only two theoretical balls... your key is essentially flicking the first ball, and the second one is springing away.

If you introduce another "ball", by replacing the single 8 pin with two 4 pins, problems can result. First, if you are hitting the bump key too hard, it's like tossing the end ball at the series. More than just the end ball will fly, because the impacting ball has more kinetic energy than it would by simply falling on it's own. However, conservation of momentum tells us that the top pin, which is of less mass than any other pin in the system, will still take the majority of the force and thus be sprung as normal, but the more massive top 4 pin will not receive a real high velocity, probably just enough to put it more or less on the shear line. Thus, the lock will not open. A lighter tap on the bump key will fix this.

The other possibility is that if your bump key has cuts that are greater than forty-five degrees, the forward energy in the pins could cause the top 4 pin to jump because the transfer was dirty, and jump just enough to cause the lock to bind. This could be fixed by perfecting the slopes on the key.

So in conclusion, from a physical stand point, the splicing of that pin should make no difference. In reality, however, an imperfect bump key would be handicapped by such a pin.

Sorry if my explanation was either over-simplified or rambling, I don't know what everyone's background is! I'll see if I can make a few pictures to explain myself.

Edit: When BLK says to file down your bump key a bit more, that is fixing the entire energy transfer problem. The 4 pin only hops a little, in either case, and if the resting position of the pins is a bit deeper, the top 4 pin hopping won't matter, as it won't reach the shear line.
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#2538 I was kicked out of Lockpicking 101!!! Oh No!!!!!

Posted by bentpick on 15 March 2007 - 06:39 PM

I simply gave them some criticism regarding the elitist attitude they convey...unlike this site which is way cool!! i mentioned their attitude toward secret info (only available to members that have proved themselves to the high priests who run the site) was funny...I pointed out that their secret info (which includes bump key info...ha ha), is completely available via Google....I guess I insulted the religious leaders a little too much!! Be careful about asking questions that are about 'SECRET' info...you might get punished!!!

Live on Bump Key Forum!!!!!
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