I'm developing an "absolute encoder" - 16 position switch with binary output. I already have two this switches, but for one word I need 4 of them, so I want to draw all parts and print them.

On the left  - key cylinder with binary rings, on the right - miniature switches.  Top ring is to hold cylinder in each position. I'll add little spring-loaded balls between them - the same mechanism I found in my real switches.