Caesar Cipher Decoder Ring Rounded

by cymon, published

Caesar Cipher Decoder Ring Rounded by cymon Dec 21, 2011
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Write secret messages to your friends and decode them with this ring. The Caesar Cipher, or Shift Cipher, is one of the oldest and simplest codes. Simply shift the alphabet by some amount and use that alphabet to write your message, or in this case twist the rings so that the letters line up in the right order.

This is actually 2 nested rings that print interlocked but twist independently. It's big enough to fit on a finger tho it may be too big for regular wear.

How to use:


Both ends of the message chain will need a ring. To encode the message first choose a letter to be the key for the message. Then twist the rings so that "A" on the top ring aligns with the secret letter key. Write the key as the first letter of the message, then proceed to encode the message by looking for the letter you want to encode on the top ring, but writing the letter on the bottom ring.

To decode the message, twist the rings to that "A" on the top ring aligns with the first letter of the message (the key). Then find each letter in the message on the bottom ring, writing down the letter above it on the top ring until the message is revealed.


If you don't have a 3D printer, order a set for yourself on my etsy store: https://www.etsy.com/your/shops/CymonsDesigns/tools/listings/259345625


This is actually 2 nested rings that print together and turn independently. It's big enough to fit on a finger tho it may be too big for regular wear.

Both ends of the message will need a ring. The first letter of the message should be the what A in the top ring alligns to in the bottom ring. When encoding use the bottom letters for the top when decoding use the top letters for the bottom and decode away!


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worked perfectly and twisted right away! amazing :)

I printed it and it works. Sorry it took me so long to get around to it.

This is not a caesar cipher. This is a simple substitution cipher. The caesar cipher requires the message to be comprised of a perfect square and transcribing it in square where each row is the same length as each collumn. Then you write it out in the opposite way you started. So if you wrote the message from lest to right in the grid you would now transcribe things top to bottom.

This is too a Caesar cipher, or rather the key to a caesar cipher. You're describing a columnar transposition, another cool way to encode messages tho there's little you could print to help encoding or decoding that.

On the other hand I suppose a scytale for encoding could be printed except (1) it's not as cool as a ring you could wear with movable pieces and (2) in the end it's just a tube of some predetermined diameter. I think this is a much cooler project.