Alphanumeric Cryptex - no other materials nesscessary

This is an alphanumeric Cryptex. This was designed to have 5 wheels, but can be made for any amount of wheels. To make this, you need 1 cap, an inner core, and outer core, 5 gears, and 5 letter rings. Download the respective files. To make one with a custom amount of wheels, print that many gears and letter rings. For both the inner and outer core, you combine the base, the top, and a copy of the middle for every wheel you want. The cap doesn't need any modification.