How Do Combination Locks Work? We Get Inside a Safe Combination Lock.

Have you ever wondered how a safe combination works? Left 4 times, right 3 times, left twice....but why? Why does that open a safe?
In this video we take apart a safe dial and show you what's inside a safe combination lock. We break down the components, the wheels, the lever, the safe relocker and more.
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00:00 Intro
00:22 All Combination Dials Work Basically the Same
00:38 How the Safe Dial Locks a Safe
00:58 What's Inside a Combination Lock
01:22 How The Dial Opens the Safe
01:35 The Wheels
02:16 Setting the Wheels to Open the Safe
03:07 How the Wheels are Connected
04:00 Dialing in the Combination
04:49 Last Step to Open the Safe
05:51 How the Dial's Relocker Works

[@RoccosStuff]

This demo is super clear, thank you! I may need to 3D print a (much simplified) version of this...

[@elizabethandrews4199]

Wow! That was very cool! I don’t know how anyone ever invented that!

[@connylandstedt]

Very nice video, could you also show how the change combination key works inside to set a new combination?

[@johnteague136]

Very cool information.. thank you sir!👍

[@bongdivinekarz7617]

Is there some way to open my vault? I forgot to put back the cover when i open it. The relocker activated. 😅

[@alientrade]

Left 4 times, right 3 times, left twice. But how do the flies not rurn the next wheel on the very first turn? How does it skip 2 turns before it turns the 2nd wheel, ditto for the 3rd wheel?

[@User-rn1kt]

4:03 my dude. The cam spins wheel 3 which after full rotation spins 2 which in turn spins wheel 1. So basically spinning 4 times clockwise is once for the cam, then other 2 times for the wheels number 3 & 2 and the 4th time is basically turning wheel 1 into position. It's why it doesn't matter if you make more than 4 spins when inputting the first digit. Subsequent turns after the 4th will just be turning all the wheels.
spinning the dial counterclockwise after inputting first digit 3 times (one for cam, wheel 3 and eventually wheel 2) doesn't affect wheel 1.
Hope you got it

[@User-rn1kt]

Simplified, you need minimum 4 spins to affect wheel 1, 3 spins affect wheel 2, 2 for wheel 1 and the last spin just rotates only the cam till the nose falls into place and gets pulled to retract the bolt.
Now I just would love to understand mechanism of setting the lock code