(12) Defeat Chinese Disc Detainers by Exploiting Their Design Defects
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- Опубліковано 5 лют 2025
- In this video I'll show you how to defeat Chinese disc detainers by exploiting one of their design defects. These are tough to pick open, but DO have a weakness.
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![[1436] Inside Perspective on Picking Disc Detainer Locks](http://i.ytimg.com/vi/tjdDF_VcI_o/mqdefault.jpg)
![[1436] Inside Perspective on Picking Disc Detainer Locks](/img/tr.png)
![[965] War-Lok’s “Nearly Impossible” Disc Detainer Padlock Picked and Gutted](/img/n.gif)
Going to be referencing this the next time I'm doing a disc detainer talk. Good stuff as always.
Yeah, feeling good to be getting back into it :)
When I was enlisted in the US Army, we got some really nice high-security pad-locks; hardened shackles, hardened steel bodies and cylinders.
The down-side was that about 2 dozen of the locks were keyed 'flat'!
Yup, every notch on the key was the same level!
Each lock had a different profile, to be sure, but the profiles were essentially a straight line with tiny 'teeth'!
We sent them back after I was able to pick every one of them with a small screw-driver...
That awkward moment when your "high security" padlock is defeated faster than a Master lock.
At Lowes, we have select master locks, so you can pick out the perfect one.
LOL
That's extremely unfair towards these chinese locks - a Master lock is defeated, literally, in ONE SECOND! Check it out (another bosnianbill video): ua-cam.com/video/nsJZ_kKjXcE/v-deo.html
A lot of love for this video. My local town council uses similar Chinese padlocks on all of their so called 'No-Entry' areas and I've managed to raise a few eyebrows by sharing this with them!
Eyebrows raised, but did they CHANGE anything? : )
@@andrewburns3823probably not our restricted areas use basic house locks instead of something like a medeco or primus 🤦♂️
The absolute best demonstration of how a disk detainer lock works on the internet. Going to save this video and use as a future reference for when I start picking them.
When you popped out that end piece with the screwdriver I bursted out laughing! ahahahahh
***** The funny thing is that in my area, about 70% of the locks I've seen are using this locking mechanism.
When I see one of these, I remember the video and start laughing:))
I'll probably never pick a lock in my life, but I find these videos so entertaining
David Daivdson I suppose it is a useful skill. I can't tell you how many times I've locked myself out of my house or truck.
It took you longer to set up the camera than to open the lock!
Thanks for the video! I subscribed. Going to be checking every padlock for now on and getting onto managers that they need to be springing for the better stuff.
Great video,loved the visual explanation of disc detainer locks , found it very helpful ty!
This is great! I bought one of these on Japan thinking it was nice but after trying this exploit it has proven to be vulnerable as well. The difference was the inside on mine was brass not plastic but it came apart just as easy.
Brilliant, Brilliant, Brilliant!!!
Many, many thanks for a really great video.
Andy
What great info,for the upcoming locksmiths Mr.Bill, if I ever get to the point of the lock beating me up, i'll pop it's bottom off. Smile 🔓⛏
Great information on disk detainer locks and the range of security provided by them. Most people just buy what the package tells them is "High Security" and then lock there most expensive belongings and toys only to find the lock on the ground and there stuff gone. We need videos like this to teach the public there is a price to pay for buying cheap locks before they find there stuff gone. Thank you for taking the time to make this video, lets hope that the lock company's watch it and learn to improve there locks.
This never gets old...
Thanks for this video i had two of these type locks on my shed and they were sturdy and large but after watching this video i tried it and it took me seconds to have the locks in pieces...new better locks now added.
"HOWDY! welcome, break in and enjoy free stuff!"
quite the lol-moment when you pried the cover plate of that lock and spilled the guts on the table. ROFL-Copter coming in to pick up the guys that buy these locks
That plastic bit is hilarious.
Won't probably stand even a couple of hammer strikes on the body before the ball bearings sink into the plastic.
Shit, thats crazy. Looks like a lock feels like a lock but you would probably be just as secure using elbow macaroni and some silver paint.
And more stylish, to boot!
Although, it took you longer to open than a Masterlock...Great vid's, I've spent hours watching them. Keep up the great work.
First time You added "Stay Safe, Stay Legal" to a posted video. +Bosnianbill
Great lesson for all, Bill.
i am not even interested in picking locks but always keep watching you do it :) found this one very interesting, thanks
Thanks for this one Bill, these locks are very common here in India and now I know never to get one of these.
Good day Bill. I am new to the sport and love your videos, I am learning so much. When I was in the Military 35 years ago we used Abloy padlocks (40 or 50 mm I think) to secure some of our equipment. The shape of the key always intrigued me, and after watching your Videos, I suspect that it is a Disc Detainer type. I don't have a Disc Detainer pick yet, I guess it's next on my shopping list. Anyway, while in the Philippines last December, I picked up some cheap Chinese locks to practice with, and one happens to be a Disc Detainer type. I used your special flat blade pick to open it exactly like in this video. After dropping all 5 discs and the locking bar on the floor, I even managed to put all 5 discs back in the plastic carrier in the correct order and orientation, with the locking bar and slide it all back together. I managed to compress the cap spring to finish off the reassembly, and the lock still works. Thank you .
Don't know if this is the first BosnianBill video I saw, but it's the earliest according to what UA-cam remembers (which is everything, right?). Greetings from over in Takoma Park, MD. Hope you're enjoying your retirement!
I wonder what a bit of heat would do to that plastic. although the screwdriver method would still be faster.
i was thinking the same thing. a torch and a pry bar would take it off real quick
And very quiet. Bright, but quiet
Melted plastic is smelly. Molten pot-metal might disfigure whatever was locked. But your point is well made.
Thanks for the video. It helped me take my lock appart and understand how it works without breaking it. Some might say it was already broken by design but at least someone else can enjoy playing with it after me.
rodney trotter .... and marking the discs helps for re arrengement of the padlock..... excuse my english.
So much fun to watch your videos, wonderful job. I'm from China, so I know how Chinese people make stuff... Don't buy if not have to
I think this is the First "Stay Safe, Stay Legal". I found Video 12. I did try this method after first seeing video 13 last year, then I reassembled the lock so I could do it again, and show some friends. Thx.
Not yet, but I only have the military issue brass/copper ones and they are probably too stiff to open a cruciform Your timing is perfect tho, because I got in a really nice cruciform last night to experiment with. I'll go to Walmart & find some cheap, flexy .22 bore brushes. I'll get some nylon ones too to experiment with. If it works, I'll demo it when I SPP the lock.
"Im gonna call this my screw driver pick".. lol. made me actually lol :)
The way you use that saw i was afraid you'd cut your own fingers off lol.
Your "screwdriver pick" is my favourite tool, too!
Would heating it up to melt out the plastic also work?
+Fotografieren mit MarcusFotos.de Probably but there's not much point, you can screwdriver it much faster than that. Plus, you could probably just crowbar these in one pull, pressing the ball bearings into the plastic.
yup...
I have to say after watching a lot of your videos,they are so well made and incredibly entertaining.But I find I have a problem,it's your voice.Its just that if I watch your videos at night,I nearly always fall asleep.You have such a calming reassuring tone to your voice,it nearly always sends me into a sleep state.I always wake up when the video ends because your voice has gone away.The only other person that does this to me is Sir David Atenburough. So you are in great company.I wonder does this happen to any body else?
Gosh, I hope not! I hate to think that my videos are putting folks to sleep... I'm not THAT boring, am I?
+bosnianbill no you are not boring at all.Like I said I really enjoy your videos.Dont change a thing,except maybe shout wake up every once in a while.
bcz u r crazzy or may lazzy one
it sometimes happenes to lassiest school's students hahahahah
I like to watch your videos when I come home from work. I find your videos very interesting, but being tired from work I always fall asleep with my face on the desk. Damn it!
+Kain Bastien Ha,I am glad it's not just me.His videos are great,I think I am just getting old.And for the guy saying I must be lazy,you are very wrong.I do a very physical job,and cycle everyday
First video of you speaking? Great work Bill!
Thanks ! Very entertaining to watch all your videos ! Thanks again !
Amazing, I was honestly expecting less quality in your older videos. But no, great quality video and explanation. Also, in the first video in which you talk, you just seem to be unable to shut up. I guess that never changed hahahahaha
ACK! Plastics for lock detention?! C-razy. Basically you can hold a lighter under the lock and heat up the guts and then with a gloved hand just yank the shackle and the balls would deform the softened plastics.
+Paxmax Or heat it up and smack it with a hammer a few times.
+chaon93 That would still take longer than just using the screwdriver method.
+Paxmax i hope you do realize that one good steel lock can buy 5 to 20 plastic cheap one.... i think his point is that dont save money on such important thing..... and also china made those cheap one because American buys them, it is not about selling shxt
Ryu Song totally agree
there is something faster its called Bolt cutters, i know as that is all was left of my lock (just a bolt cutted padlock) as my bike got pinched at college Very long long time ag o(the new bike the news paper got me after that followed me into the collage every time after that and they did not stop me,, now i look at it it would of been bad PR for the collage if they did stop me so i guess its why they allowed it but did not tell me if i was allowed or not)
any way these things will not be immune to a bolt cutter. all the fussing with screwdriver and pulling it out when you can just cut it with a small bolt cutter in 5 seconds (and most of that time is getting it out to put it over the lockbar) and be gone with the bike. even cheap D-Locks only require shock to brake them (one hit hammer and a large flat head screwdriver) most newer Real bike locks have 2-4 layers of protection you cant saw them and its nearly imposable to cut them (unless you have a circular saw but it make a lot of nose and even then Plastic or kevlar might even Jam the disk)
Nice to know I can be a locksmith with a screwdriver and not have to buy fancy tools. A wrench and screwdriver used to bust open most US Army locks. Not that I ever did such but did hear a rumor.
Thank You! Another excellent informative video. You saved me money and potentially my property. I can't thank you enough.
About the hardened bar, You could heat the bar with a propane torch so it softens the hardening and it will be alot easier to cut.
Wow moment at 10:27. It's when it dawns on you just how awesomely easy it is to defeat these chinesium locks.
Didn't think those locks where that level of garbage... By the way, nice sarcastic humor you have. Thanks.
Thank you for the comments! I almost feel like I KNOW you because I've been watching your videos for quite some time. In fact, your video about the tubular key cutter was VERY interesting because I've recently come upon 42 American 7260s (see my other video). If you want one (or more) of them just PM me and I'll send out a package. You'll have to cut your own keys though.
Thanks Bosnianbill, this video made me laugh, I guess the makers believe their locks are meant as a visual deterrent rather than a real one!
+Stephen Johnson
In my experience, pretty much all locks are visual deterrents.
Great way to compromise those poorly made locks. Nice video!
this video was handy.I just oppened the lock from my school gates so i can get out and yet again they bought the same shit XD
Hello Bill, you may be able to heat the lock with a lighter or torch and melt the plastic, the ball barings might fall into place. I could be wrong but its just an idea. I found your videos yesterday and i think they are great
Yes your probably right only one way to find out 357mat1
Thanks 357mat1
ive watched a number of your videos in amazement, but this one hurt my gut. from laughing. I couldn't stop giggling at the gut dump you did on this guy!!!!
Incredible!! Fantastic analysis and very informative. Thanks
I found one of these kind of locks a while back and thought they were actually safe and a miracle bargain. Never seen these kind of locks before and thought they were safe from picking and the "heavy reinforced steel" would protect them from breaking..after watching this video i realised....i have never been so wrong in my life. You just made me go buy some other kind of safer lock for my bike. I can't belive these break so easily...damn
Damn it you were first! I wanted to do a video JUST like this one but yours is so perfect that I do not have to do one any longer. Very accurate information you shared with us on this video! You really mentioned everything even the material quality. I have to say.. very very good job mate!
Well..the funniest lock picking video i ever watch..
Why do I get so fascinated about everything lol. Far from my field (EE student) yet so damn interesting. You also explain things the way one of my professors does, and he doesn't lose my attention very often. Except when I'm taking notes extreme(TM)
The sordid way you violated that poor lock.... Stripped bare, and completely, with just a screwdriver...
At 4:20 I got a bit nervous watching you hacksaw right next to your hand, but great video nonetheless! Thanks for the tips!
I've seen the Abus locks on eBay quite regularly. I got mine in Germany while there on business..
Thank you so much for the screwdriver trick. I finally got rid of my rusty lock.
I have an Abus 320 that seems to but together in the same way, the ring even rotates like yours do. Of course it's not made of pot metal but brass and there does not seem to be anywhere to get purchase with a screwdriver on it, but still...
Dang Bill you just blew out a whole genre of locks in one vid,,,,,NICE.....lol
A Chinese Master Lock, I think you scared it open with that screwdriver Mister Bill
Great info Bill! Love your videos! ;)
Just tried this screwdriver approach and it works :))Absolutely effortless! Just Like opening a bottle of beer...
Looking at that plastic part.....could you apply enough force on the hasp itself to just force the ball bearings into the plastic enough, to release the hasp?
+aethertech I think with some lube and a lot of power you can do that as well . Thats what came in my mind .
Where do you get your BEST locks
Hi Bill,
Where did you get the Abus top tension high quality lock pick? I have been looking all over the internet and can not find one.
Thanks again for another awesome video.
Rick
_I miss you already Bill!!!_
thanks bill , quicker than getting my bolt cutters out of the truck. I'm old and there heavy
Ive got myself an Abus 88/50. I believe thats the one you showed first on this video.
When I saw the plastic retainer, I got an idea...
Use a metal hook to pull on the body of the lock, and just use a blow torch to heat the lock. As soon as the plastic melts, the lock should pop open... I'm guessing the lock should be blown open in about 30 secs.
Holy cow, That is WAY too easy!
that's how I ended up opening an old american series 50 lock, took a few wedges with the "screwdriver pick" though.
What was that pick in the case at 7:48? Can it do others besides granit locks? It looks like it might be a good little addition to a starter kit, I especially like how you can decode the lock, and see which pin you're on. I like that a lot.
I tried popping the cap out of one of these and it just snapped the tool. Possibly over hardened, or the cap was better on that brand. However, two hits from a cold chisel into the side of the lock popped it off - it went straight in through that thin pot metal sidewall!
Torquing works well. I've used that on the few I haven't been able to pick "on the door".
Nice and informative video, thank you :D
Tye cheap locks with the plastic cylinder...
What happens if you heat the lock with a blow torch?
Brilliant - like your other videos !
Thank you for the video. Are those surgical pliers you're using? :D
well now we all know that's how this cheap price comes from. great video man
Thanks, now i will steal everything
+KrisRaps Don't steal! :D
Excellent! Great job.
omg that was BRUTAL! gutting a lock in seconds... ur like a serial lock murderer... =D
Bill, you are awesome! But please, you're going to give us all a heart attack if you keep using a saw like that. Your fingers are far too precious -- be safe my friend. :)
Don't act religious
leon vdd Okay, I'll act like an atheist. Bill, you are awesome! But please, you're going to give us all a heart attack if you keep using a saw like that. Your fingers are far too precious -- be safe my friend. :)
BobWidlefish no the "my friend" part
leon vdd Perhaps we just come from different backgrounds -- I assure you that's not a religious thing in my neighborhood. Even the great atheist polemicist Christopher Hitchens routinely started his debates by saying "Thank you, ladies and gentlemen, comrades, friends, brothers, sisters, for coming." I mean no more and no less than he did. It's a colloquialism I refuse to let religion have exclusive control over. If it's a turn of phrase that bothers you, I encourage you to ignore it. :) And smile -- the world is beautiful, Master Lock sucks, and variety is the spice of life. Cheers!
@@BobWidlefish nifty
I believe the top part of the lock is called a "shackle", not a "hasp". A "hasp" is a slotted hinged metal plate that forms part of a fastening for a door or lid and is fitted over a metal loop and secured by a pin or padlock.
You are 100% right. Sometimes my lips outrun my brain and I'm past the mistake before it catches up.
Hey Bill, where can I find a good disk detainer lockpick set? Both of the two. One for top tention and the other for bottom tention.
www.reddit.com/r/lockpicking/comments/3hcywt/better_disk_detainer_picks_and_where_to_get_them/
Thanks to make and share this interesting video, looks like it's very impressive. I even try to learn some picking skill just for fun. Back to the point, yes we know Chinese brand sometimes means cheap and low quality. because this stuff have their own customer, Fair to say, you take the comparison between "abus" and this so call "howdy" just like you compare with toyota coralla with lambor. totally different quality and differnt level of retail price. But on the other side, this is a good chance for those locker maker to get some important feedback from professional like you. Thanks again for your impressive video. cheers.
No matter how strong the lock is its also what it's attached too. I had a buddy who paid crazy money for a top lock for his shed. I said give me a crow bar and I'll pop that clasp off since it's only held on by wood screws in a 1 inch thick piece of wood. I don't have to touch the lock. I'd love to see some great high security ways to attach the locks to.
+The ScreenTeam: For Granits, www.taylorsecurity.com/abus-130/180-hasp-abus-130-180-granit-industrial-strength-hasps/ are awesome. For Diskus locks, www.taylorsecurity.com/abus-140/120-hasp-abus-140-series-steel-security-hasps/ are very good for shackles up to 7/16"
bosnianbill, late question(and I don't see it answered in the video or asked in the comments), but what stops the guts falling out of the quality locks like the Abus (you pointed out the hardened metal exterior and hasp, and the steel liner, but didn't point out how they prevent the screwdriver attack as far as I can see)- not a hint of criticism, just curiosity/stupidity on my part. Very informative and entertaining video as always (I've watched maybe ten percent of your output over the last week)
oh wow this is only ep 12 o.o over a 1000 now XD well done.
I believe thear is a tool for poping the fitting out of the lock and its super fast to do. also I no longer have it as I sold it but I hade a abus disc lock super high secerity was a $100 lock and same thing compressed detainer ring. buy the way love the videos keep them comming
If you ever need replacement spacers for an expensive padlock that you're messing about with then just buy a cheap Chinese padlock, take it apart like Bill did and there's your replacement spare discs and spacers. (they might need filing to fit) That's what I did when I needed another spacer for my Abus 37RK/80 that had developed a sloppy stack after I reassembled it one time.
Brilliant video!
Wow ! What did you machine the locks with, wht tyoe of machine, cutter, lathe ?? Would love to see a video on the machining of the locks ;) kool
bosnianbill . . . . Very nice job it does !
if the only thing holding the ball bearings in is plastic, can you pull the lock open with a little extra force and maybe open it without any tools?
How do you manage to cut a lock so precisely so it's not even damaged ? Good job
I wonder if the plastic core could be melted with a small gas burner like you'd use to caramelise the sugar on a crème brulee?
Hi Bosnianbill, do you have any experience with Thai branded padlocks like IsOn as an example?