bump keys ?

[quicklocks]

hi i have a set of bump keys from souber and i cannot seem to get them to work ive read the instrutions and practiced they just dont seem to open any lock i try them in?
i have the yale union legge and viro ones
what am i doing wrong help please

[cred]

hi m8,
i have got a set of yale ones from souber but have never got them to work,did the same as it says on the instructions but still nothing

[quicklocks]

yeah im realy frustrated about it realy i can pick them open but thats not the point i hate to spend cash on something that doesnt work. i hat to be ripped off , or thats how it feels

[toomush2drink]

Im a little curious as i didnt get instructions with mine, just shown how to use them, what do the souber instructions say ?

[quicklocks]

you start with key number 1
insert it into the keyway then pull back one pin.
then tap with a mallet or hammer wilst turning the key
if nuber 1 doesnt work then move on to number 2 ect

[lee abc]

I,m the same.used them on my coarse with 24/7 and did get a yale to go,since then I've tried them and had very had little luck.now they just sit in my tool box and I wouldn't bother with them unless I was getting desperate

[pinky]

bump keys really are a last resort opening method. they do work , but have a limited success rate and not the 95% success rate advertised, realisticly 10% is more accurate.

key 1 and 4 will seldom work , 2 or 3 are the most successfull keys, they work well on yale 5 pin euros, though will always be hit and miss. as you draw key back 1 notch and strike with mallet you are knocking all 5 pins up in the air at the same time, its sheer luck as to if and when you will hit the sheer line and open it. though if you stand and hit it long enough it will go, could be 1 second or all day till you hit sheer line.

many tools are not what they seem , or are not as advertised , bump keys will work but how long ????? ok as a last resort.

[raimundo]

Bump keys seem to be for dimple locks, where the variance between the highest cuts and the lowest is not so much. for common pin tumblers, learn to pick.

[Teus]

where do they sell dimple lock bump keys?

[Jimmie]

bump keys are GREAT !!!

they work even better on HS locks ... with them you can open some difficult locks you cannot even open by hands because of the wards or because of the presence of inter-active mobile pins ... the only restriction is the angle of the pin because of the impact point on the lock pins

the one cut out trick doesn't work so well ... it works in fact only if the lock pinning is quite simple ... for ex he cannot work if you have a deep cut followed by a short cut !!

you need to find out the right cuts and use a good hitting hammer ... you need to test some plastic, wood, rubber, steel ... etc till you find the right tool and the good bump key which work the best for you

(bump keys are a scientific tool ... it uses the 3rd law of Newton but making them for a particular lock is not really a true science until you find the right cuts and the righ hitting material)

you have to test a lot and improvise different ways

the bump key is a simple tool ... don't spend your money !!!

cut them out by yourself !!! if you don't have a key cut machine ... (difficult to cut out by hand even it is feasible) go to the next cut away "smith" shop and ask for a key cut at the deepest positions

(most of the time they believe it is for a master key and sometimes may ask you to photocopy your ID card)

I think you understand I can't give you all the infos in an opened forum so ... try, test, figure out !!! be patient, curious, and innovative !!

Jimmie