Instructables
Picture of Cryptex
Homemade cryptex from PVC pipes.

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.
 
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Step 1: Materials

Picture of Materials
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1) 1(1/4)" coupling (x1)
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
10) Tape

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

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Take both 1(1/2)" couplings and tape them, so they fit into the 2" threaded ends caps, because they naturally do not fit inside each other. (I used the ugly Christmas tape, because you won't see it anyway)
When they fit nicely, glue 1(1/2)" couplings inside the 2" threaded ends caps.

Step 3: Glue

Picture of Glue
Glue the 1(1/2)" pipe inside one of the previously made threaded end cap (2" threaded end cap with 1(1/2)" coupling inside)

Step 4: Sand

Take other previously made threaded end cap and sand its inside, so the 1(1/4)" coupling can fit inside it.
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

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Take the 1(1/4)" pipe and glue it inside the threaded end cap made in step 4.

Step 6: Adjust

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Make two pipes the same length, I made mine 5.7 inches and I made 4 dials. You can adjust your length depending on how many dials you are making.

Step 7: Sand

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Sand the 1(1/4)" pipe, so it fits inside the 1(1/2)" pipe.

Step 8: Gap

Picture of Gap
Take the 1(1/2)" pipe and cut a 0.5 inch gap in it.
Do not cut it completely, so the pipe doesn't collapse.

Step 9: Base of dials

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Take the other two 1(1/2)" couplings and cut them in half, to make four.
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.
jdrake72 months ago

I made this.

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cahillicus5 months ago

PVC cuts great on a chop saw. Definitely gonna do this with the kids and try is with nice straight cuts. Great instructable!

Wolfbane2216 months ago
This is just a copy of a previous instructable just like your other instructable is. moderators please investigate.