Bumpkey making: Correct Depth?

[kender]

How can I determine the correct depths of a 999 key? Is it the depth that applies no pressure to the pins while touching them?

Help please

[zeke79]

The depth is not that critical as long as you are atleast the deepest cut or slightly deeper. Spacing is more of the critical detail. What brand of lock are you trying to make a bumpkey for?

[Shrub]

If you want to make a bumpkey for a particular lock and have a working key make it the depth of the deepest cut on that key and then remove a little more.

[kender]

Thanks

How much should I remove from the shoulder & tip of the key?

[stlbolt]

Just enough off the end of the key so it doesnt hit the back when you push the key in and then off the shoulder what they usually sa 1/2 a millimeter? Maybe 8th? I cant remember I know its very little. Hope some of that helped

[SkyDancer]

If you want to make a bumpkey for a particular lock and have a working key make it the depth of the deepest cut on that key and then remove a little more.

Yes, he's right.

In my opinion, that is the most successful way make a bumpkey for a particular lock, though the depths of various key blanks differ by millimeters.

I have successfully 'bump' two simple 5 pin locks...both are cheap China made brands. I chose the lock with keys having the most even teeth and proceeded (another shop of course:) keeping the bump key thingy low profile as possible) to get a similar key blank and done at 999..

Have not tried on other more expensive locks like Yale though:)

My humble two cents worth

Regards

Candice

[SkyDancer]

Oops sorry, submitted post before completion...lol...

Continued from my previous post....

--yes , no pressure to pins while touching them but need to have the 'feel' on the first touch with the rubber bump-ber thingy.

Regards


Candice

[zeke79]

There is also a small bumpkey article I put together that covers making your own bumpkey from any key that will fit the keyway. You can download it from my site. Just click the www button by my profile button. Username lockpicking password 101.

[Olcaytug]

I bumped it!!!!!

I wawsn't so shocked and happy when I picked my first lock a few days ago. Because I earned that; I really deserved to pick that lock, but.... This is so easy! No skill, no working.. only 10minutes of cutting and exercise!

But dear master zeke79; I humbly think there is a mistake with your manual.. When I cut the key using a flat file and rounded it with a round file, nothing happened. The key was ugly and it was very crude.

I used the edge of a square file, and it was very easy to cut, the key was far more precise, and I bumped the key after trying a minute! (I learned to use a square file from the presentation of tool)

Regards

[Olcaytug]

Also one more note:

when bumping, I observed that not quitting the torque after the first hit helps! Becausesometimes only somwe of the pins set at the first hit and you may need to hit a few more times in order to easily set the remaining pins without disturbing the already set pins!

It is wonderful!

[Olcaytug]

A final remark :

You don't need any tomahawk, but hitting with a small angle near the top of the key(in order to cause the key to turn as soon as the pins set) works perfectly!

Bumping really beats any autımatic way such as pick guns! No need to invest so much money on automatic ways if you are working with no concern for skill on bumpable locks!

On the other hand, I'm sure using lockpicks is allways better as long as you can use picks on that particular lock. I thing bumping wouldn't be possible on many lock mechanisms (and if it would, what would be the point on lockpicking?)

[Olcaytug]

I was right!
This bumping thing can not compete with picking, because;

- No fun after the first few shocking experience
- It depends on luck
- It makes too much noise
- Your fingers hurt too much after hours of exercising
- And its is actually more difficult than picking. After you start bumping in some position or in one direction, you may be unable to bump in the other direction or in some other position!

I'm so angry! I can't bump when the lock is not in my hands! I tried using a vice or buping the same lock on my front door.. But I can't! I tried everything, but I can bump on a door only 1 time out of 100 tries! And my finger hurts too much! I broke three keys, I tried for hours... and I'm so angry!!!!!!!!

Back to building my own pick set!

Regards!

[illusion]

you broke three keys?

you are definately hitting them too hard in this case...

have you seen the videos I posted recently regarding bumping?

I have found that whilst it relies on some luck to a certain extent 10 strikes or less are are usualy all that's needed to bump the lock.

[zeke79]

Ugly or crude does not matter. If your spacing is correct, it will work. I put the guide together using those tools as not everyone has access to a code cutting machine.

[Chrispy]

How do you break three keys?