Kumiko, Asanoha panel generator

Inspired by the Japanese carpentry using Kumiko patterns I put together some code to generate the Asanoha style. The generator will generate a panel of any size specified in the x dimension with a specified number of patterns. The y dimension can be customised by specifying its number of patterns. The thickness of panel can be set. I've added a boarder to the panel, but there is an option to turn this off if unwanted. My though is to use this to generate panels which can be added to other designs. I've included a printed example which is a small panel 100mm x 130mm Finally, I have tested the code a think it's fairly robust but it could break if you push it. Let me know if you have any problems and I might be able to help.