Created a bump key with a file - feedback on quality

[ausbump]

Thanks for all the replies, i gathered i had attacked the shoulder far too much
Hopefully when i can analyse a real working bump key the error of my ways will be noted!

[zerokool]

Zerokool, what you have done is to not read the key quite right, youve missed no cuts or very shallow cuts and only filed the ones you had that were deep,

You will have to restart im afraid,

No problem restarting having a copy of a key where i work is like a buck and some change.

There is a line in keys.... how close do you get to that line and do i just use a chainsaw sharpener . And dont file down the shoulder ?

[Shrub]

That line is called the key warding, it coresponds to the warding on the plug,

You dont go off the warding when cutting the key you go off the maximum lenght of pin for that series of locks,

For a kwikset you will find the measurement and file to that depth and then an extra stroke or two with the file,

You do remove a little off the shoulder and the tip to make it work,

I will do 2 things for you as im in a good mood,

I will find out the depth for you to file to and i will look for a pdf made by Zeke on how to make bumpkeys,

[Shrub]

Kwikset depth, 0.329" i think,

Zekes PDF Here,

[Kaotik]

0.329 is what I have in my chart.

[g5]

I too have created a bump key with a file and am wondering what I am doing wrong - I cannot seem to bump any Schlage lock. I used an old SC1 key originally cut to 54438. Here is a picture:



Does anyone have any suggestions? I'm just looking into bumping as a starting point for an interest in locks. Thanks in advance.

[globallockytoo]

Your spacing and the width of each space is out....quite alot I think...

Keep trying!

Perhaps...take a Schlage barrell....

Put key head in vice....put plug on key...measure spacings...cut depths to 91/2....make sure peaks are correct...file tip of key back....and go for it!

[Shrub]

Yoiur cuts need to be a V sahpe and i suggest youve cut too low or at least cut too much material off where there isnt a cut,

[g5]

Hm, so that key's probably worthless now. I'll have to try again, I guess. Didn't know that the cuts had to be V-shaped.

Thanks for the advice!

[youmansk]

You will need greater peeks between pins. The idea is that the pins will rise sharply when you strike the bump key. I created a schlage bump key by first gettinga 999 key and making the pin depths a hair deeper. Then I cut the shoulder back about .5 mm.

[Shrub]

You will need greater peeks between pins. The idea is that the pins will rise sharply when you strike the bump key. I created a schlage bump key by first gettinga 999 key and making the pin depths a hair deeper. Then I cut the shoulder back about .5 mm.

You need to also remove a little from the tip,

[BumpnGrind]

Did I make these right? Cause Neither of them work. [/img]

[Shrub]

Have you removed some material off the tip and shoulder of those keys?

I cant make out very well from the pic but it doesnt look like you have,

[BumpnGrind]

Did I make these right? Cause Neither of them work. [/img]

Oh yeah, WTF is with no edit button?
Anyway, the one on the left is handmade, the right is purchased that way.

[BumpnGrind]

Have you removed some material off the tip and shoulder of those keys?

I cant make out very well from the pic but it doesnt look like you have,

I havent yet but I may try anything.