Recently moved to a gym that uses padlocks for locking your stuff, they sell them too for an inflated price of 3.5$, jokingly I tried my key on a friend’s lock, and one more random one, of course it didn’t work and it made me curious.
My question is how do factories make all keys/locks different even at these cheap mass produced kinds that are probably sold for 0.5-2$, how is it worth for a factory to “use different patterns” at that price, or how do they do it?
In: Engineering
The simple fact that that’s the only way they are worth buying.
They are all the same, but assembled slightly different.
[This](https://www.google.com/search?client=firefox-b-1-d&q=how+to+change+tumbles+in+doorknobs#kpvalbx=_OSjVZfGZJdPm5NoPpeePSA_34) is how to change the locks on a typical doorknob, it’s built at the factory in the same manor.
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