Prosty dzieciecy szyfr (easy children cipher)

thingiverse

You are the parent cipher, a simple square with a hole that is perfect for writing plaintext messages. Next, you turn your site by 90 degrees, and then again insert text and so on. You always rotate in the same direction four times. If your message is shorter, fill in the blank fields with random letters. I created in OpenSCAD a simple program. If you want to create yourself this square, go here: http://druk3d.herokuapp.com/szyfr?ile=3 The number of variable can be from 2 to 10. The arrangement of holes will be random. You can also change the thickness or gaps between openings directly in OpenSCAD.