OHMIKY's Code Wheels

Codewheels provide a convenient way to encrypt and decrypt messages in cipher.  Often used for simple substitution ciphers, they are far more effective when used with a polyalphabetic cipher such as the Vigenère cipher.

The first codewheel is intended for use with ciphers which use only letters, while the second is intended for use with ciphers which combine alphabetic and numeric characters.

Simply save the file you wish to use, print it out on heavy paper such as that you might use for business cards, cut them out around the edges and put a pin or rivet of some nature through the center of each piece as in the photo below.

a codewheel assembled



codewheel 1


codewheel 2




further discussion of substitution ciphers can be found at Wikipedia