The simple CRYPTEX

My brother's birthday is approaching and, to surprise him, I gave him a front row seat ticket for a musical at the "Sistina" theater in Rome ( yes, he lives in Rome...).But this time, this gift has to be relatively hard earned.Being him (like me anyway) a fan of mysteries, charades and so on, I spent the morning designing a simple Cryptex to enclose his theater ticket.many cryptexes have been created on many sites, this is one of many (I always prefer to create the templates myself lol)"The simple Cryptex" is very easy to print, since it does not require any support although it requires a rather well-calibrated printer due to the tolerances between the various pieces that form it.There are two cylinders that act as general blocks and four rings numbered from 0 to 9, each of which can be programmed to a value to unlock the combination by placing the key ring inside the numbered crown. However I have already planned to update the file Cylinders for 5 and 6 digit codes