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OFFICIAL THREAD: can't get bump keys to work
Posted 29 April 2007 - 12:29 AM
Having some decent keys, preferably from bumpkey dot us, helps a lot.
Posted 29 April 2007 - 06:07 PM
1.) Peaks are too small to be workable. File yourself a new key from a blank using that one as a guide to the spacing.
2.) Widen the grooves a little bit and fix the angle on the initial peak on the front of the key if you ever want to use it for pull out, although it is clearly modified for minimal movement.
3.) Same as the first one. The peaks are too small the work.
4.) Take a file to the peaks and make them steeper and more pronounced. That should fix it up for you.
5.) Even out the depths and reduce the size of the third peak.
6.) Looks workable.
7.) Widen the grooves a little bit.
8.) Sharpen the peaks.
9.) Sharpen the first peak only.
10.) Remove the half peak on the front of the key.
11.) See 10.
12.) Looks good.
13.) Looks good overall, sharpen the peaks a good deal. Sharpen the first peak in paticular. The spacing might be a little off.
14.) Same key as 13.
15.) Reduce the depth... a lot. You have some cuts on the original key that are a lot deeper than your bump key. Use the existing key as a guide... bring the depths down past the lowest on your key by a little bit. Make the peaks more even and steeper.
16.) Same key as 15.
Posted 01 May 2007 - 03:01 AM
However, I find the making of the keys an interesting challenge and since there aren't a lot of practical applications for bumping, it IS mainly about the challenge. In the last week I’ve been trying to make a workable 5 Pin Schlage SC1 bump key. I chose this one because I have a partially transparent “practice lock” which lets me see what is happening with the pins. The key I am modifying is NOT the one that came with the lock, but instead a Schlage housekey that already had several deep cuts. The key I'm working from is the top one and the bottom one is my fourth attempt. I've taken off a little bit from the tip and shoulder. When I insert it all the way in the practice lock it “jumps” back a little - which I read it’s supposed to do.
I may be using the wrong technique to hit the key (I use a Brockhage Bumping Hammer), or have the wrong torque, but what I'm seeing when I watch the pins is that all five are not jumping up to the same height when they've been bumped. I wonder if this is because it's impossible to make all the “ridges” the same height. I've color-coded the valleys and you can see that when I file down the “:red valley” (using a triangular file), I always end up with a very small “ridge”. There's no way around it.
I know this question has been asked but I didn’t find an answer posted. Do all the “ridges” need to be a uniform height? Do the top pins all need to jump up to the same height before you can turn the lock? If the spacing of the ridges is even a little off does it mess everything up?
Thanks for the help!
Posted 01 May 2007 - 01:11 PM
I also have tried the kwik on my deadbolt on my front door and no success. I hit hard, soft and medium with a bump hamer, I quick snap it, I put light, medium and hard tension on them. I feel now I am just doing the same thing over and over. H E L P! If there is any. THOPER has helped me a WHOLE bunch and just don't know where to go from here. Anyone want to buy some keys? (I would really like to learn to Bump and then learn to pick) I just feel like I am making no progress and just doing the same thing over and over. THOPER want to move down here and teach me how LOL?
Posted 07 May 2007 - 02:01 PM
also, it doesnt matter what you hit it with does it? cause right now im just using a block of wood.
Posted 07 May 2007 - 03:57 PM
Make sure all of your peaks are the same size, the angles are nice and sharp around 45 degrees, and ensure that the angle on all of them are the same. Make your peaks a bit smaller and follow these guidelines, and you should have a working key.
That being said, it does matter what you hit it with. Get yourself a medium-sized screwdriver with a rigid handle. It would be difficult to get a block of wood to move with sufficient velocity.
Posted 12 May 2007 - 10:27 AM
Today I´ve made a Bump Key by myself. I´ve used the original key to file it.
I don´t know why it still won´t work. Has my key a bad quality or may I do some mistakes in my technique?
I´ve watched many videos about this topic. After I saw an 11 years old girl opening a lock I thought it can´t be so difficult to use the key.
It would be very cool when anyone could held me to solve my problem.
I´ll post a picture containing the original key and the Bump Key.
Posted 13 May 2007 - 12:02 PM
I noticed the tipps of theopratr and used it to improve my key.
But I've still no success in bumping. I tried every bump and every method to get my key working. Nothing happened.
Have you got any idea what can I do better now.
Here is a photo containing the improved key. I hope you'll find anymore reasons for the failed bumping.
Thank you for your nice tipps.
Posted 13 May 2007 - 09:21 PM
The third peak is very steep, and the last groove is a little high/uneven. Other than that, it's just small adjustments.
Hope you find success in bumping! Keep practicing with technique.
P.S. You don't need to file the parts marked in blue, it's optional... it makes the key not look awkward! The red is approximately what needs filing.
Posted 14 May 2007 - 11:22 AM
I've made an other, smaller key and tried to use it as a key for my bicycle lock. Nothing happened.
Can I use it for this kind of lock at all or is it too special for bumping?
Thanks for your help.
Posted 25 May 2007 - 11:05 AM
it is normal that you are to stupid for filing or to stupid for bumping?
ive a question about how bumping works:
when i hit a key, does it slide into the lock so the pins slide the "triangels" up, so they are acelareted upwards. the shape of the triangels would so be very important (but only from one side).
or cause i a shockwave into the key, that is transfer to the pins, transfer to the upper pins?
would one of the following key work, when not, why?
is here somebody from germany? may he could tell me some tips for german key brands.
ive searched the net for a really detailed tutorial, but i only find somd sketches or videos you cant see so much. i want a tutorials with tones of photos, so you can see every step, with alot of informations "i file this so, so this and this happens, for this and this reason". filing a key, take a picture all 5 mins and tell how it should look and why it should look so. may a big faq would be great...
if someone is a professional and bored, it would be great if he do something.
Posted 28 May 2007 - 11:27 PM