How do I open my 3 digit master 630d lock forgot the combination?

Most combination locks have 3 options of 2 digit numbers to solve. 20³ = 8000 possible combinations. Say you knew the first number... 20² = 400 possible combinations.

You can reasonably solve this in 2 hours sitting on the couch, if you keep an organized tally. Also, keep in mind, some versions will have a key lock on the back for a master key. These can be picked easily.

If you don't care about the lock they can easily be opened with a small thin screwdriver. Simply pop off the number wheel then the plate behind it with a little effort. The innards can be dumped out then and lock will open but broken.

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