this kid i know just finds open locks in in our school and then he takes them home and pops them open with a screwdriver and just watches the internal parts. Easier, and you get free locks.

Posted at 10:18 am on Jun 22nd, 2005 by CaptSnuffy

And just how would you open a master lock with a screwdriver? Doesn’t make sense to me.

Posted at 10:26 am on Jun 22nd, 2005 by Priest

Dear all hackaday readers, i have created a little video that will show you how to open a master combinaison lock in about 2sec. What you need is a tool called a padlock shims avaiable on various lockpicking webshop like lockpickshop.com. Here it is: http://toad.datap0rt.info/x04d_masterlock.avi

The video has been encoded using the DivX video codec.

x04d

Posted at 10:45 am on Jun 22nd, 2005 by x04d

x04d, I spent hours learning to pick those babies without any real success. you are pro.

Posted at 11:14 am on Jun 22nd, 2005 by matty

I hate to say this because I know someone is going to flame me for it and tell me I’m wrong.

I spent two years of high school trying to open “master locks”. I will guarantee that the pulling up on the locking mechanism (the U shaped thing) will not work on any of the Master Lock padlocks made in the last few years (I’m talking the trademark brand of master lock… not the cheapo ones).

This trick however will work fine on almost any of the cheapo ones that most people buy.

Anyway, if you don’t believe me then go try it on a master lock branded padlock.

Posted at 11:30 am on Jun 22nd, 2005 by nickfury

Ok after seeing that video i really dont feel my stuff is safe anymore that was… a little too easy LOL.

Posted at 11:46 am on Jun 22nd, 2005 by chris

As you can see in the video, the master lock that i used is quite new according to the teen colors. I think i’ve bought it last summer in a Wall-Mart. However, I know exactly what you mean: some masterlock seems unhackable using padlock shims and this is because they changed the mecanism a _little bit_. For those models, you just need to put the shims not directly on the retention mecanism because that will block for sure and probably broke the shims if you put to much pressure. You need to put the shim a little away from the middle, lift the shakle a little bit by shaking it up and down, and then move the shim slowly in the middle. It’ll slide itself under the retention mecanism and then you can lift the shackle without problem ^_^

I’ve passed some time studing locks, it required a lot of pratice ^_^

Posted at 11:49 am on Jun 22nd, 2005 by x04d

I learned the combination method posted a year ago and have been successfully opening master locks ever since. It works, I swear. Get so you don’t have to write the possible combinations down, and do it all in your head. Honestly, buy a lock, hide the combination from yourself, and you’ll get a rush when it opens. There are tricks you’ll learn to get faster along the way.

Posted at 11:50 am on Jun 22nd, 2005 by aDAM

Does the shim thing work for the other kind of Master combination lock as well? The much sturdier looking kind, generally bronze-ish, with four 0-9 dials on the bottom?

Posted at 1:18 pm on Jun 22nd, 2005 by Arthur

There is a method for opening some of those brass combination locks using a thin bit of metal inserted beside the dial. It works by detecting a flat place on the dial shaft.

I can’t find it right now, but the process (IIRC) was to put this thin shim in one of the end dials, pressing against the shaft, rotate until you find the flat spot, and repeat for each dial.

That either gave the combination, or a combination that was a fixed offset from the real combination.

Posted at 1:40 pm on Jun 22nd, 2005 by orphrey

does anyone know how to open those locks common in highschool locks where the lock is embedded into the locker and opens by sliding a metal piece sideways?

Posted at 1:47 pm on Jun 22nd, 2005 by Leginuoh

dude, what-the-fuck-ever! i am so pissed off!

i submitted that link as anonymous, and you go and attribute it to some eliot phillips???

fuck you. this is not the first time this has happened. stop stroking your friends’ cocks, asshole.

Posted at 2:34 pm on Jun 22nd, 2005 by bob

Bob,
My name is on it because I posted it, I post all of the features. You submitted it anonymously, did you want [thanks anonymous] at the end?

Posted at 2:38 pm on Jun 22nd, 2005 by Eliot Phillips

There aren’t 40^3 combinations. The markings on the dial are just aesthetic. The locking mechanism only has 10 positions, hence 10^3 combinations.

As noted earlier, this weakness was corrected in Master Locks several years ago.

Posted at 2:50 pm on Jun 22nd, 2005 by Steve

I really feel for the blog owners (eliot and vince) who have to put up with all this violence in their comments. I’m glad that the hackers I know in RL have social skills. Just because you’re on the internet doesn’t mean you have to treat everyone like shit.

Anyway, vince and eliot, keep up the good work, I think they really do appreciate it. I certainly do.

Posted at 2:59 pm on Jun 22nd, 2005 by anonymous

(oh, I was posting concerning bob’s lack of self control, not about you steve)

Posted at 3:03 pm on Jun 22nd, 2005 by anonymous

(oh, I was posting concerning bob’s lack of self control, not about you steve)

Posted at 3:05 pm on Jun 22nd, 2005 by anonymous

why brute force a master lock, i’ve got bolt cutters.

Posted at 4:32 pm on Jun 22nd, 2005 by bob smith

This definitely works, although your fingers will be tired from spinning the dial. I had a Master Lock which I didn’t have the combo too, stuck with it, and got it open this afternoon. It just takes a little bit of patience.

Posted at 4:33 pm on Jun 22nd, 2005 by nate

word 17, why pick your way through the front door when you can take a bat to the back window?

but seriously, lockpicking is cool challenge. Definitely something im in to.

Posted at 4:56 pm on Jun 22nd, 2005 by CaptSnuffy

I’m suprised nobody has pointed out how old this is. I read about this on the Internet at least four years ago. It’s probably more like eight years, but I can’t remember.

Also, it’s not very useful. Going through up to 100 combinations “in the field” is not generally acceptable. And then there’s the fact that combination locks are rarely used for anything other than school and gym lockers. Real lock picking is much more useful.

Posted at 5:30 pm on Jun 22nd, 2005 by some dude

The new homepage of the original Masterlock Cracker app http://homepage.mac.com/joshpeek/masterlockcracker.html

I’m working on updating it. I’m going to make a bunch of different version besides a VB one. For an example, a java applet, cocoa version, a perl version, etc. I hope your computer will be able to run one of these versions.

Posted at 6:20 pm on Jun 22nd, 2005 by Joshua Peek

So we have a video? this is a hack? where is the plans for the shim damnit!

Posted at 7:23 pm on Jun 22nd, 2005 by nate mc

I dont know if anyone has ever seen this but would it be too hard to hook up a stepper moter to a pic or a basic stamp and have it try all the combonations (using some logical system) really fast? Just an idea.

Posted at 7:53 pm on Jun 22nd, 2005 by gigman

Do you think any coders out there could make the “masterlock cracker” program into a java app? Just something that could be installed on a cell phone. That way, all you would have to do is figure out the last digit, open the program on your cell, and voila! It would be much more convenient than carrying a laptop around with the prog, or (dare i say) learning all of the math involved!

Posted at 8:23 pm on Jun 22nd, 2005 by DNordbak

I want to see a DIY on shims. Like, making them shouldn’t be hard, plus using them seems to be the easiest way.

Posted at 8:33 pm on Jun 22nd, 2005 by windwaker

you can just buy a set of shims online

not too expensive

Posted at 9:02 pm on Jun 22nd, 2005 by CaptSnuffy

To Chris ( 6 – http://www.hackaday.com/entry/1234000640047476#c305871 ) You should try using a Kryptonite lock then. heh heh

And this article is so useful, it’s one thing to need to crack a lock, but its a whole other story if you find some lying around your house and don’t want to throw them out just because you’ve lost the combo.

Posted at 10:18 pm on Jun 22nd, 2005 by Jon

after reading this article, I was successful in using this trick to open a master lock. Very very cool, and not too difficult provided that you have patience.

Posted at 11:38 pm on Jun 22nd, 2005 by Bucky

ive made shims out of hairpins before, not hard to make and last quite a while if you do it correctly. Ive heard of using some metal tape mesure as a shim, sounds good but never gave it a try because hairpins never failed me( except on masterlocks, in which real shims usually will not work)

Posted at 12:55 am on Jun 23rd, 2005 by ryan

This thread inspired me to write a CGI version of the app since the link to the VB app was unavailable and I saw some references to a web-based one at some university but it seems to be long gone as well. here it is, http://www.dfw.net/~scottvr/crackmaster/
There is also a link to the source.

Posted at 6:41 am on Jun 23rd, 2005 by ScottVR

>>DNordbak

Thats a really good idea! Infact, my next version is going be written in java. I just never thought of putting it on my phone. How easily can this be done?

Posted at 8:34 am on Jun 23rd, 2005 by Joshua Peek

Orphrey, any idea where to get a shim thin enough to fit in that tiny little space next to the dials on the brass locks?

Bob, how does one know before blowing a whole bunch of money on boltcutters whether they will be strong enough to cut the lock in question?

Posted at 10:14 am on Jun 23rd, 2005 by Arthur

josh, I really have no idea. But I was thinking either symbian or java, but more phones can run java apps, so it would seem better suited for that. I have no experience in coding, so I couldn’t help you out there, but as for installing it on your phone, it should be relatively simple.

Posted at 1:45 pm on Jun 23rd, 2005 by DNordbak

When I was a teen long, long ago, i figured out a different method to brute force master locks. it was easier then because they didn’t have the “dummy” notches cut in the drive wheel that this guy’s algorithm identifies — just pulling on the shackle while spinning would reveal the last digit.

The brute-force method is simple: don’t dial the whole digit space every time. first, i only used the numbers 2.5 apart, so I’d start with a first digit of 0, then 2.5, then 5, and so on around the dial until I got to 37.5. (masterlocks are made in great haste at low cost, so getting within a digit or so is usually close enough to open it.)

The important part i discovered was that by understanding how the “earlier” digit wheels are spun by the later digit wheels, I figured out that i didn’t have to go all the way back and redial all three digits every time. i’d dial the starting digit (usually zero) then go back all the way around a full turn, then stop at the first digit +2.5, and then back to the last digit. Rather than a two-full-spin reset, I simply went forward only to the first digit +5, then back to the last digit. I’d repeat, going back to +7.5, +10, etc., until the second digit was approaching the first at which point I had completely exhausted the first digit. I’d then spin the dial twice for a full reset of the inner dials, and change to the next first digit.

if i made a mistake, I’d simply spin the dial twice, starting with the same first digit but picking up the second digit where i had left off.

with not much practice, I was able to spin through two full first digits tests in about a minute, for a max of 20 minutes per lock. my average is probably about 10-15 minutes per lock (there are always a few screwups, and lost counts.)

Also, with the addition of the dummy detents found in the current crop of masterlocks i found i could no longer spin directly to the last digit. i had to stop at every little indentation in the last wheel and try the shackle at each point. my finger is usually pretty tired after testing all those combos.

a final note: once the lock is open (or if you simply encounter an open lock as a bonus), peer inside the lock with a flashlight. you can usually see the wheels inside the lock. take the opportunity to manipulate the lock until you’ve lined up all three notches by eyeball. make note of the combination you dialed (say you saw 10-32-24) now, add (or subtract, i can never remember which) about 10 to each number (yielding 20-2-34, note the wrap around the number 0). in any case the real combination will always be some fixed offset from your observed combination.

have fun!

Posted at 4:24 pm on Jun 23rd, 2005 by jaded

Please select one of the following as a standard HACKADAY comment:
1) This is a hack? No way dude, this isn’t a hack at all! You don’t know anything!

2) This is so old. I knew about this back when I was in diapers.

3) Sure, but this is the crappy way to do it. I invented a special method of doing it which is far superior. But I’m not giving away my secrets, because then you’d know I’m full of it.

Posted at 10:33 pm on Jun 23rd, 2005 by gavalt

the old master locks can be opened by kicking them, like on school lockers, hold it up so the back is facing you (it will be almost upside down) give it a good kick and it should pop open. it doesnt break the internals either.

Posted at 9:43 am on Jun 24th, 2005 by brandon

http://www.i-hacked.com/content/view/173/48/

Ahahahahahaha.

Posted at 8:10 pm on Jun 24th, 2005 by windwaker

I’ve made a couple of padlock shims, i’d shy away from soda cans – you’ll end up with a lot of cut fingers – very painful for your everday hacker to type with those cuts too! haha

a good metal i’ve found is the metal off of floppy disks (i’ve tested with a few lying around the office and “CH” have worked the best for me) If need be i’ll post a tutorial on making them. Beware that some floppy disks metal is weaker than others, and some is a *smigget* thicked than others. Mess around until you get a good one. Also these shims weaken over time and only work for about 3-5 padlocks… Becareful when using them so you don’t end up breaking it in the lock. This metal is also useful because it’s pre-rounded so you get less cuts :)

here’s an ascii diagram of what it looks like, first flatten it out…
_ _ _ _ _ _ _ _ _ _
| |
| |
| |
| _______ _______ |
|| | | ||
||_______| |_______||
|_ _ _ _ _ _ _ _ _ _|

Then you cut them up and you can make two… one for larger locks and one for smaller locks…

_ _ _ _ _ _ _ _ _ _
| |
| _ _ |
| / | | |
| _ _/ |_| _ _ _|
_
_ _ _ _| |_ _ _ _ _
|_ _ _ _ _ _ _ _ _ _|

The top one has worked best for me…

Posted at 4:36 pm on Jun 27th, 2005 by strazzere

[sigh] it killed my formating, if anyone even reads this and wants pictures, just give me a shout or post it here and I’ll do it on a different page with pictures…

Posted at 4:40 pm on Jun 27th, 2005 by strazzere

Shouting.

DIY padlock shims, with FLOPPY DISKS = perfect hackaday material, and helps for everyday hax0ring.

Posted at 12:53 am on Jun 28th, 2005 by windwaker

Show them floppy metal shims please.
Thanks

Posted at 5:16 pm on Jun 28th, 2005 by jerery

I liked the cell phone thing, but i m working on my calculator way.I have the (actually i rent it form school) those TI graphing calculator, it takes many stuffs even mario games , so i m trying to load this programme too.Just started the Scratch programming after understanding the logic of this stuff.I alwyas wanted to do this, after seeing those movies where people open thoses locks (Italian Job)
Thanks for this post….

Posted at 7:54 pm on Jul 1st, 2005 by Dr.Math

18
youve got bolt-cutters

18.5
ive got a torch! and a portable band saw, and a dremel, and a…

Posted at 10:53 am on Jul 17th, 2005 by panochapower

20
bat to rear window is SO violent! then you still hafta climb or reach thru it. well… ya gotta do what ya gotta do – just check & make sure you werent sent written invitation first: can you see hinge pins? awfully “get smart”, wouldnt you say?

Posted at 11:07 am on Jul 17th, 2005 by panochapower

aka criminally “challenged” (congenital defect)

but eliot…
i only wanna change the combo on my master padlock – can it be done key-free? even by me?

Posted at 11:51 am on Jul 17th, 2005 by panochapower

Sigh… this is like windows (or VAX…), why the hell are people still using it?

Well, why don’t you guy’s check out http://www.toool.nl/index-eng.php
and
http://connect.waag.org/toool/

They have some very nice videos and inforations about this.

Posted at 10:51 pm on Jul 23rd, 2005 by Davey

I have an old Yale combo lock and I’ve forgotten the combination. It has 5 “sticky points”. Any idea on how to figure out the combination?
-john

Posted at 4:28 pm on Jul 29th, 2005 by JOhn

ok…feel free to email me at rickysad@gmail.com

when i was in highschool…. 1985 or so a friend showed me how to read the serial number? on the back of a master lock, and there was this formula you could use…and with a very slight bit of trial/error you could open ANY standard (locker type) combination lock… i could open ANY master lock on any locker in my high school…. did anyone else ever run into this ????? it was amazing…. the TEACHERS would have me open locks of students who forgot their combos….

Posted at 9:08 pm on Jul 30th, 2005 by rickysad

hi, i’m trying to change the combo on my Dudley lock, is there any way? plz add me rko_sunshinebeauty18@hotmail.com if you know how

Posted at 1:57 pm on Sep 10th, 2005 by julie

I think that just taking the whole entire lock apart with a pair of normal plyers (cat cut metal) and maybe a screw driver is much more fun, unless its ur own lock… I can take apart a lock in about 10-15 minutes…

Posted at 2:13 am on Sep 20th, 2005 by Sirlancelot

I think that just taking the whole entire lock apart with a pair of normal plyers (cat cut metal) and maybe a screw driver is much more fun, unless its ur own lock… I can take apart a lock in about 10-15 minutes…

Posted at 3:03 am on Sep 20th, 2005 by Sirlancelot

I used to open the combo locks with a shoe string, rapping it twice around the dial and then pulling the shoestring up and down verying your strokes up and down till it opened! Anyone heard of opening them that way? It does work!

Posted at 3:07 am on Oct 16th, 2005 by Tim

my gf got my old locker. she gave the combo and i saw that its the only 6 numbers different that mine was. say my combo was 10-10-10. hers is 4-4-4. we tried this on a bunch of lockers my buds had lst year and they all open with 6 less than there old combos. i dont know if this is a pattern. this is a new school with new locks with zephyr lock on the knob. so i don’t think its cause there old or busted or anything. is evry lock like this? -md

Posted at 10:09 am on Oct 29th, 2005 by md

I could REALLY use your help!

My trusted Dudley lock, which I have used for over 10 years, seems to be stuck. The locking portion of the U seems to be stuck: it won’t pull up, and it won’t go back down into the rest of the lock. The dial won’t move, either… although if I jiggle the U, i can get it to move a little bit (sometimes).

Any ideas? I’d hate to get a new one, since I’ve used this same combinations forever!

Thanks,
Matt

Posted at 10:32 pm on Dec 2nd, 2005 by matthew

Hey I forgot the combination to my master lock and would like to see if you any way on cracking it. It is a Master Lock 175 four digit combo. Thanks

Posted at 2:39 am on Jan 22nd, 2006 by Doug

hey i have the serial number for my lock, which is the ones they use at school in the locker rooms, its a masterlock with the u shape thing. can someone give me the combo?

Posted at 3:06 pm on Jan 28th, 2006 by steve

Hey, does anyone know how to crack a Dudley lock? I really need to get into my locker as all my stuffs there, but I can’t get in it. My school knows that Masterlocks are easy to get into, so they all have Dudley. I really need in my locker. If someone knows how to, Can you please email me at Chaos_is_fun@hotmail.com ?

Thanks.

Posted at 12:17 am on Jan 31st, 2006 by Kyle

ox4d yea the little clip on how to open a master combination lock in 2 sec. dosnt work so could you plz add a comment on how to open one in 2 sec. thnks

Posted at 4:43 am on Feb 26th, 2006 by ummmmm yea

does any one no if it is possible to impress a key for a master combination lock?
and what size key would you need to impress the key hole on it?

if you no how plz add me to ur account or send me a email on how to do that thx

lol565lol@hotmail.com

Posted at 3:30 am on Feb 28th, 2006 by lock dock

I have a Master Luggage lock that is stuck locked. I don’t remember the combination of THREE numbers to open the lock.
The #is: 468ODBLK.

Thank you to anyone who can tell me the easiest way to open this lock.

Posted at 3:39 am on Mar 22nd, 2006 by Mary

I have a Master Luggage lock with three rows of numbers. It is locked and I cannot open it since I do not remember the combination. The Lock Number is: 468ODBLK.

Thank you for your help! 8-)

Posted at 3:42 am on Mar 22nd, 2006 by Mary

Hey, does anyone know the exact mathematical equations that are behind the generated 100 combinations? I’d like to program this on my calculator in Q-Basic and was wondering if anyone could help me out.

If you can, please email me the necessary math to injection@gmail.com

Posted at 9:37 am on Mar 28th, 2006 by neoanarchist

I have a Master lock (40 numbers dial), 3 numbers combination to open
I remmember only that first # is 0
lock # 909567
pls help if you can

Posted at 2:51 pm on Apr 21st, 2006 by Alexej

can sum1 explain the difference between the newer and older dial master lock latch bars…i just pent 15 min. trying to shim what i think is a newer model, cuz iv done it before fine

Posted at 10:29 pm on Apr 26th, 2006 by Spazz

i have a 40 number master lock that i have no clue what the combo is, is there any way to find out the combo except guessing if you know email me at dewfreak81@yahoo.com

Posted at 6:29 pm on Apr 28th, 2006 by Kevin

well i got a 40 number masterlock, i seen the video but i don’t understand it. can somebody please email me back to tell me how to crack it?? thx

Posted at 4:29 pm on Jun 1st, 2006 by marty

i lost my combo in one of thoese 3 number combo locks so email me at demoninuyasha_572@yahoo.com if u can tell me how ta crak it :-)

Posted at 7:10 pm on Jun 3rd, 2006 by andrew

hey i need the combo for a backpack lock model

Posted at 7:30 pm on Jun 3rd, 2006 by andrew

Like Doug, I have misplaced the combo to my Master Lock 4 digit combo, #175. Any help would be appreciated.

Posted at 10:57 am on Jul 9th, 2006 by Ken Manley

Just so everyone knows, I bought two brand new masterlocks today, name brand with the black dial. Shim does not work, and I’m not suprised. Finding the 12 digit’s and eliminating 11 of them, then using modulo 4 to further get 100 combinations still works. I opened the new lock without looking at the combiniation in under 5 min. Then I opened another older lock my roomate had forgoton the combo for in about 8. (the combination was further down the list of possibilities that the first one.)
One thing to remember is that most locks are made to be exploited, so a locksmith can unlock them if need be.

Posted at 11:39 am on Jul 12th, 2006 by Ovidsmuse

Just so everyone knows, I bought two brand new masterlocks today, name brand with the black dial. Shim does not work, and I’m not suprised. Finding the 12 digit’s and eliminating 11 of them, then using modulo 4 to further get 100 combinations still works. I opened the new lock without looking at the combiniation in under 5 min. Then I opened another older lock my roomate had forgoton the combo for in about 8. (the combination was further down the list of possibilities that the first one.)
One thing to remember is that most locks are made to be exploited, so a locksmith can unlock them if need be.

Posted at 11:39 am on Jul 12th, 2006 by Ovidsmuse

I somehow set my 3 digit master lock incorrectly, so i too need to know a way to crack it. Marty, where can i get this video u are talking about?

Posted at 9:52 pm on Jul 12th, 2006 by Toni

You can make a verry crude version of the lock shim by using the dust sleeve of a floppy disk and cutting it down to look like the one in the video, i did this and have a working shim for my Combo lock.

Posted at 3:50 pm on Jul 13th, 2006 by Philip J Fry

http://www.geocities.com/masterunlocked/

Posted at 12:33 am on Jul 15th, 2006 by Kyle

richard feynman’s autobiography where he talks about doing this at los alamos in the 1940s is fun.

Posted at 4:08 am on Jul 15th, 2006 by wim

I may have found a flaw in this entire hack. I just purchased a master lock, yes a true MASTER LOCK. The combination was 23-28-33.
If I’m not mistaken, and I have taken CALC 1250.
23 and 33 are not modualarly equivalent.

Does anyone have any clue whats going on.

Posted at 11:16 pm on Jul 21st, 2006 by Chovy

More important:
Does anyone have any clue what ‘modualarly equivalent’ means?

:-p

Posted at 11:06 am on Jul 23rd, 2006 by Anonymous

That is odd. My best explanation is that the locks are not accurate down to the number. The algorithm would yield 21 and 25 (both of which are congruent to 33 mod 4), and it’s possible that 22 falls within the effective range – the room for error – of one of those values. Another consideration is that the given final value might not be quite right either – try to find the last value using the procedure as given, you might find it isn’t exactly 33. If it’s 35, for instance, that’s congruent to 23 mod 4. If it’s 34, then it’s congruent to 22 mod 4, and 22 could easily be in the same range as 23.

Anyhoo, that’s my best guess.

Posted at 2:37 pm on Jul 28th, 2006 by jr

I tried the method posted by strazzere, using shims made from the metal on a diskette. EXCELLENT! I got the lock open immediately.
I used to do it the old fashioned way, by dialing the numbers, listening and pulling the hasp – that was never 100 percent accurate and took effort and time. This method so far has been 100 percent and never takes long.

PS – I used this for “good”. Students do things that they think are funny, like locking their combination lock onto other peoples property, which requires the bolt cutters to be found. This year THEY were the ones who would have to go look for a set of bolt cutters, to remove someone elses lock from the handle on their back pack.

Thank you for the new and improved version to pop a lock. :D Many kisses.

Posted at 1:09 pm on Jul 31st, 2006 by Fräulein

toni go all the way up the page and its a little text ill copy past it for ya : UPDATE: x04d sent in a video demo (DivX) of how to open a lock in 2 sec. using a padlock shim.

its under the small text on top

Posted at 10:07 pm on Aug 1st, 2006 by marty

i made a padlock shim but i dont know where to put it in so i tried the shacle and it dosent fit in so could anyone help me cause all my stuff is in it :S

Posted at 4:53 pm on Aug 2nd, 2006 by marty

by the way my if u know how to open a lock please email me at : thadudeorama@gmail.com or
latreillemartin7@hotmail.com

Posted at 5:07 pm on Aug 2nd, 2006 by marty

23-28-33? Seems it is about mod 10, or mod 5.

Posted at 11:51 pm on Aug 2nd, 2006 by lwc

Just bought two master locks today. One standard black, model 1500D combo 39-25-31. This one cracked by the book.

The other green, model 1529D combo 15-20-33 was difficult to find the last digit. I finally peeked and found the same problem that Chovy found. 33 mod 4 is 1 (33/4=8 rm 1), so the first digit combos should be: 1, 5, 9, 13, 17, 21, 25, 29, 33, 37. The actual first digit is not on the list. I tried using 13 and 17 with no luck. Maybe this trick only works with certain models?

Posted at 3:36 am on Aug 5th, 2006 by brian

Many apologies… I just doubled checked and 13-19-33 does in fact work.

Posted at 4:05 am on Aug 5th, 2006 by brian

As far as security is concerned, it’s not that hard to break open a combination lock, from what I remember. All you have to do is put a metal bar, preferably one that’s about the same thickness of the space of the shackle, inside the shackle and pull/push down. It breaks off quite easily.

Posted at 3:43 pm on Aug 9th, 2006 by user

where can i get a peice of metal the thicknesse of a shackle ?? for free thadudeorama@gmail.com

Posted at 10:00 pm on Aug 13th, 2006 by marty

I’ve found a way to open master #175 combo locks in less than 2 seconds using a very easy to make tool.
Also works on sesame combos…these type of padlocks look secure but are actually the easyest locks to open.
email me for info. zoome_1@yahoo.com

Posted at 7:14 am on Sep 5th, 2007 by sue

This is the last time i will post this here …so listen up….I can show you how to make a key to open all #175 master combo locks, (thats the brass thumbwheel type, NOT THE CHEAPER DIAL TYPE,that is used mostly in locker rooms.)Its really amazing how easy it is…This is NOT A SHIM TOOL..it is a very easy to make KEY that will open ALL #175 master combination locks faster than you can work the combination!!!this is your last chance to be the first to learn this trick…I’ve looked all over the internet and have seen nothing on this hack…E-MAIL ME FOR DETAILS NOW….zoome_1@yahoo.com

Posted at 4:13 pm on Oct 22nd, 2007 by zoome

I have two Master combination locks that have unknown combinations. Can you help to break the lost codes for me to use the locks? Appreciate your input.

Posted at 6:08 pm on Oct 23rd, 2007 by Betty

i am just learning how to pick locks what is a great help guide to pad locks? joshuadg1@yahoo.com

Posted at 8:09 pm on Oct 25th, 2007 by joshua

People, please send me the letter, how to open master locks or locks like Dudley, cause i forgot how to open my lock and i really need it to open it right now!! please hurry and send it plz~~!!

Posted at 7:15 pm on Nov 8th, 2007 by Elena

Ok well. Our company backup files get taken offsite in a canister with a platic and wire seal and a crappy little padlock that needs a crappy little key. I once manage to break the seal and use the wire to crack the lock in about 5 minutes. I lost the key. Doin it ever since.

Posted at 3:43 pm on Dec 7th, 2007 by BofH

http://www.mydigitallife.info/2006/11/15/crack-and-hack-to-recover-combination-lock-or-master-lock-combination-instructions/ is a good site, satisfied many people >.> try it if u like.

Posted at 7:50 pm on Feb 6th, 2008 by Karie

One way to test a bolt cutter before buying it would be, if you’re in a hardware store, they have a bolt cutter they use themselves to cut chain–some times it is a fixed machine type thing but sometimes it is just a boltcutter. So ask them to look at their boltcutter and see if the jaws in particular are the same quality as the ones they sell. Ask if they cut case hardened chain with their cutter. And also just tell them you are buying this cutter for such and such a purpose and get them to assure you it will do the job. Then if it doesn’t, you’ve got a good reason to bring it back (with the thing it won’t cut would be good) and get a refund. If they get tough the legal angle is they warranted it (represented it) (orally) to be useful for a particular purpose, you relied on their representation, and their warranty was breached.

Posted at 2:43 pm on Jun 15th, 2008 by LOCKER1

Hey.. I work for a big machining company, and this one job we were doing, a company gave us a huge steel locker with a 0-99 combination on it. Is there any chance i can break this, or should i just get it drilled. Its been locked for about 2 years now and really just want to get inside lol.

Posted at 12:08 pm on Aug 30th, 2008 by Don AR

I have combo padlock with a hole on the back and how do i make a key and get the key cut to the open the padlock the lock is model #1525 and wana find out how i can make a key that will open it. Can anyone that know,s how please email me at kevin.msmith@yahoo.com

Posted at 12:51 pm on Nov 8th, 2008 by Kevin