Number lock

This (mostly-flat) kit card is a bit of a challenge to make but will produce a working 3-digit combination lock, just like the one you used to have on your high school locker. Well, sorta like that one. It requires an impeccably tuned printer (some of the parts are very tiny), a steady hand, tweezers, and maybe some magnifiers. It prints without supports and snaps together without any glue, fasteners, or other hardware.I learned how a combination lock works from this video, and based this design off of that. It consists of three dials which have release notches that all have to be lined up to open the lock. There are little pins on each dial that push on each other to align the notches, and you can set to location of the pins during assembly to create unique combinations.About the dial: I didn't have enough room to put numbers, so like one of those annoying clock faces without numbers, you have to kind of intuit which number is which. On the face there are 10 long marks (0, 10, 20,