The cryptex works much like a bicycle's combination lock, and if one arranges the disks to spell out the correct password, the tumblers inside align, and the entire cylinder slides apart. In the inner compartment of the cryptex, secret information can be hidden.
Step 1: Materials
2) 1(1/2)" coupling (x4)
3) 2" coupling (x4)
4) 2" threaded ends caps (x2)
5) 1(1/4)" PVC pipe (x1)
6) 1(1/2)" PVC pipe (x1)
7) PVC glue
8) Bolts and nuts (x4)
9) Sand paper and dremel tool
The number of 1(1/2)" and 2" couplings, bolts and nuts, depends on how many dials you are making. (I used 4, because I made 4 dials)
Step 2: Tape
When they fit nicely, glue 1(1/2)" couplings inside the 2" threaded ends caps.
Step 3: Glue
Step 4: Sand
When everything fits, glue 1(1/4)" coupling inside the previously made threaded end cap (2" threaded end cap with 1(1/2)" coupling inside)
Step 5: Glue
Step 6: Adjust
Step 7: Sand
Step 8: Gap
Do not cut it completely, so the pipe doesn't collapse.
Step 9: Base of Dials
Sand down their inside just a little bit, so they turn smoothly on the 1(1/2)" pipe.
Then also cut a 0.5 inch gap in each 1(1/2)" coupling.
Step 10: Stopers
Then place and glue bolts and nuts in the holes.
Step 11: Dials
Step 12: Almost Ready
I also had to adjust a length of the dials a little bit so they fit nicely into the pipes.
Step 13: Stoper
This is needed so the dials don't fall when you open your cryptex.
Step 14: Finished
Now just decorate it to make it look like an actual cryptex.
Place your keyword letters on the place above the gap on the dials, so they (key letters) will be opening the cryptex.
You can hide there anything you want to keep out of reach of your friends/parents/siblings, like document or money.
Hope you enjoyed:)