(picking 431) Master combination padlock (No 175) bypassed and gutted - thanks to PickME 1977 for it
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- Опубликовано: 11 дек 2024
- I have a play with this 4 wheel combination padlock by Master (model 175). After showing the well known security flaw and opening it up with a thin knife, I take it apart and inspect the inside. Have fun. Maybe you have always wished to see what's inside a Master 175 - here you will see it all the part and learn how the lock mechanism works.
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Watched a load of videos about this style of lock and this is by far the most thorough explanation of how it works and how to work around it.
Thank you for making the video and for taking the time to upload.
Glad it was helpful.
Excellent work. I could not have asked for a better explanation of how this lock works!
Thank you for this motivating feedback.
I have the 175, (no other numbers), lock purchased when I was 18 years old, (50 years ago), and still use it at the gym. It is solid brass body and wheels. Thank you for a fantastic explanation of the operation. 👍🏻
Cool, that your lock survived that lock. Glad you found the video interesting.
Every site I tried worked for them, but not me. I saw how the lock works and soon got the combination. I've found, if you don't know how a thing works you probably can't fix it. Thank you for your video 😚
That one's been around the block. Your explanation of the change key was very good thank you.
Thanks you. It was pretty interesting to explore this lock. Glad you liked it.
i have watched a ton of decoding videos none of them helped and the person was more interested in running their mouth and telling stories 10 mintues go by and nothing! your video was presice short and it worked!
Thoroughly explained and now I feel like I understand everything about how this lock works - thank you so much good sir for this video! :D
Cheers my friend, glad you found it interesting.
Wow you did a very good job explaining how it works, thanks very much I can now pick my locks, 9 all with the same combination, it saved me alot
Thanks for the feedback. Glad the information was helpful.
Thank you. Was beating my brains out trying to reset combo after using the decoder to open. Never thought about location of the gates.
Thanks for watching. Glad the video was helpful.
Great demonstration Potti314 it was very interesting to see the mechanism. Cheers
Thank you - glad you liked it.
It's always interesting to know how things work, thanks for the video and the great explanation.
Cheers, happy you liked it.
Thanks a lot. Really informative and clear video, Perhaps a little long but it's always nice to watch well focused videos. I need to disassemble this and now I know how to do that. I'm quite sure that the pin is hard to remove as it probably is harneded material. Must fix the lock to drill press and try to drill it out carefully so the lock looks nice after the tampering.
Thank you - I know that I tend to over-explain and to be a bit too verbose sometimes. I'm constantly working on making more dense videos, but with little success though ;-) I have no drill press and so I made a mess with my poor lock ;-) I wish you luck with your lock. Bye :-)
So using the change mechanism you could also decode the lock by detecting the placement of the wheel.
EXCELLENT VIDEO!! very glad you enjoyed that lock :-))
totally awesome to see the inside workings and you did a great job explaining everything!!
Thank you for sharing my friend :-))
Thank you so much for sending it to me. You sent me lot of great stuff. Do you remember the car ignition lock from GM? This is a bad, bad boy. it's the unpickable lock. But the master was great fun :-)
It did look pretty till you turned it over! Haha😀 Looks like the grinder won! Great to see a nice close up of the gizzards and how it all works. I seen Bills video but didn't fully understand the lever and spring. Nice job explaining.👌👍
Yes, the grinder won ;-) My options reg. tools are limited and my plans to open it nicely failed ;-) Great to read that my video was helpful :-)
Potti314 😁 Yes, your video's are always helpful🍺✌🙃
Happy picking 😂
Cheers :-)
Nice review buddy great video thank you for sharing. 😎
Cheers - great that you liked it.
Thanks for point this out for me!
Cheers :-)
Sorry about the grammar. You'd think English wasn't my first language! Thanks for pointing this out for me. I feel better now. :) Cheers!
Haha, I didn't even realize it - not before you pointed me to it ;-) Sometimes you just read what you think the writer wanted to say and immediately understand it. So, such little mistakes are just overseen. I think that you have to suffer a lot under my "English" so don't worry about it ;-)
:) I never fault anyone who can converse in more than one language. Unfortunately, for most of us over here, taking another language in school is only an elective and not until you are in High School. I applaud your efforts. Tallan Pick has sub-titles and I thank him often. I'll stop pestering....for a little while. :)
Thank you so much for this video!!! It worked
Thanks. Glad you liked it.
I wish someone would make an acrylic cover for outer shell at 4:12... If someone wanted destructive entry, what would happen if a hole was drilled in shell and it broke the spring at 6:40, would that defuse lock? Also, does your handle/name (Potti314) have a meaning? Pi?
Awesome vid Michael, my friend, very interesting mechanism and very well explained for you mate, a pleasure to view, I enjoy it !
Thanks for your work buddy ;o))
Cheers buddy - my pleasure and curiosity to see what's inside :-)
Gracias por el vídeo aunque no hablo inglés me pareció muy interesante muy gráfico y muy didáctico
Soy Cerrajero y este video es de mucha utilidad para el gremio
Saludos desde México
Gracias amigo por tus lindas palabras. Happy picking.
It's always fun to take apart things that are not meant to be disassembled ;-)
Potti314 and always good to see this flawed, yet surprisingly persistent design :-)
Hi Potti,
wo gibts das dünne Werkzeug mit schwarzem Griff das Sie zum øffnen verwenden und wie heisst das?
thanks for the video, it was full of "Good" info.
Cheers :-) Glad to read that it was helpful.
Good demo & video...Thanks
Cheers. Glad you likes it.
At last - a _proper_ view inside one of these things ! You said pull picking is not possible as you cannot tension the mech., but if you push on the shackle to release pressure on that 'comb' or 'forked' plate, can you feel any feedback of the gates by turning the wheels ? The newer version of this lock, the Magnum M175, has an improved mech where bypassing would be nearly impossible, but decoding and picking are possible - I have tried picking and it was easy - so they have swapped one failing for another I suppose, but I still think the new mechanism is more secure in most ways.
I tried it but the click that you get from spring that pushes against the wheels, to stay at a whole number, is much stronger than a possible feedback from the "fork". Also you have a lot of imperfections (rust, etc) what supersedes the feedback. Maybe a most sensitive person can derive better info from it. I tried that on some other locks with this kind of indirect mechanism without success. Maybe a stethoscope would be a better tool ;-) What kind of internal mechanism does the new M175 have? So you can pull-pick the lock? That's a big step back. When a thin knife a tool is needed it's more secure compared to when only tension is required ;-)
I suspected it would be hard to pick this lock - as you say, the direct connection between shackle and wheels is not there, and the wheel detent spring masks any feedback anyway ! Yes, I have 'pull picked' the new M175, however, you can't turn the wheels with shackle pulled, so you have to 'turn wheel, pull shackle, check wheel slack, release shackle, turn wheel, pull shackle, check wheel slack....' etc so it's quite slow. I agree with you that opening without a tool is lower security than needing a tool, but in the case of the old Master 175, the bypass is so well known now, and so quick to do, that I rated it lower :o) I don't actually have an M175, or I could send it to you, I picked one on a gate on holiday with the owner's permission :o) The M175 in question can be identified as it has a rectangular 'front panel' rather than the oval panel of the older locks. I will try and find the internal photo on Google that I saw, and send you the link. Basically, the fingers on the 'forked' plate touch gates tangentially in old design, but poke into gates radially on the new design - so the forked plate slides rather than pivots.....hope you understand ? Atb, Dave
Great video buddy,
I suggest that you finish cutting that lock body, and turn it into a cutaway lock
That would be sweet... also I have an extra Master 175 just sitting here too. So no worries if you can't get it without some destruction. You have another one here for you.
Thanks a lot for the kind offer. Maybe I will come back to you later if I will mess up mine. Happy that you liked the video - I myself was quite curious to see what's inside.
Very nice ... interesting gutting and mechanism explanation.
I wonder if it can be decoded as well ?
Thanks. It can be decoded with a decoding knife as I have shown one example in the video. You feel the gates and can align all wheels correctly. Pull-picking however is not possible as you cannot tension the locking mechanism.
Potti314 thanks for the reply ... I think I have one on these locks in a drawer somewhere ... I'll have to dig it out and play with it!
Yes, that's the true purpose of locks - playing with them ;-) Have fun :-)
A bit of trivia:
While the lock is open, there are two positions each wheel can be in when you put the change key in. The correct number can be on the top or the bottom of each wheel.
But having the wheels reversed is still harder to get the change key in.
And the combination you end up with could be very confusing, so I don't recommend it.
Did you ever find out what that code met ? My 175 has a different code on it
Sadly I still have no idea what that code letter code on the lock means.
👍
Thank you.
Great vid my friend top info and very helpfull👍😊😊👍😊😎😎
Cheers and thanks for watching.
Nice gutting potti I did wonder what the inside of these 175’s looked like! Was that the original shackle spring I wonder. It wasn’t even properly finished if it was ( should I be surprised with Masterlock?)
Thank you. Yes, the spring was original. As everything was oily and dirty inside I soaked the parts in break-cleaner. Maybe the finish has suffered from that.
Potti314 it was the lack of spare squared off coils at the end of the spring that made the engineer in me shudder :D