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Commercial Masterlocks

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#1 gottagotomoz



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Posted 02 June 2011 - 04:28 PM

I have recently acquired a Master No. 5 Commercial padlock, and out of about 100 attempts, I've opened it twice by bumping, and twice by picking. Are there any tips, or hints I should be aware of? I've noticed the commercial locks are a bit tougher than I thought they'd be, but I'm up to the challenge. Do these require more, or less tension or the same than standard masterlocks? I can open a standard No 1 masterlock (non commercial) 9/10 times by bumping. Any help to increase my success rate with this lock would be appreciated.
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#2 gottagotomoz



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Posted 02 June 2011 - 04:46 PM

Update. I've been toying around with an M10 bump key, and I've been able to bump it very often now. The original key is on a M1 key, but opens with an M10 (5 Pin) key. This is a 4 pin lock. Can anybody explain this?
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#3 LockPickIt


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Posted 08 December 2015 - 04:50 AM

Take a look at this:


Uploaded months ago and you'll see how insecure Master Locks nowadays

#4 JacksonZWBix



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Posted 03 December 2017 - 03:51 AM

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