How combination locks work

BONUS: a trick on opening a Master padlock.
jimnmssays...

That is *quality. I'm sure it's an over simplified model, but seeing the way it works, it looks like it limits the 2nd and 3rd numbers to a certain range of the 1st number to prevent the little tab thing from going too far and catching the previous tab again.

rustybrookssays...

Halfway through this I start thinking, damn, the woodgears.ca guy would love to see this! Then at the end I realize it IS him. This guy is freakin amazing and makes all kinds of awesome stuff out of wood. He made a freakin pipe organ, he makes gears out of wood, all kinds of crazy stuff. His site is a treasure.

Paybacksays...

>> ^jimnms:
That is quality. I'm sure it's an over simplified model, but seeing the way it works, it looks like it limits the 2nd and 3rd numbers to a certain range of the 1st number to prevent the little tab thing from going too far and catching the previous tab again.


Not really, the extra turns you make are for catching the tabs in the other direction for each cam. Once the tab has come around to say, your first combo of 12, you have all the way around past 0 back to 12 or 13. The wood version has large tabs and slots for effect and strength, a steel one would have far smaller parts allowing for all numbers to be available. I have seen a test combo lock that was 5-5-5, which shouldn't be possible given your assumption.

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