Gringotts Mini Vault

In the first Harry Potter movie, Harry visits Gringotts Bank to see his vault. When it opens a fascinating mechanism is shown. Making a replica of the door is way too big of a project, so I made this Mini Vault that demonstrates 2 slices of the 7 slice vault door in the movie.When the vault is locked, all the knobs are also locked.This design has a working combination lock that can be programmed to custom combinations.When the correct combination is entered the upper left knob enabled, turning this 90 degrees clockwise, releases the pawl locks on the upper slice and enables the upper right and lower left knobs.Turning the upper right knob 90 degrees clockwise slides the pawls of the upper slice from the locked to unlocked position.Turning the lower left knob 90 degrees counterclockwise, releases the pawl locks on the lower slice and enables the lower right knob.Turning the lower right knob 90 degrees clockwise slides the pawls of the loser slice from the locked to unlocked position.And