Thank you for the lovely comments and inquiries. I've had a couple of PMs asking about the pattern and tool as well. Here are links to the threads that led me to the tool and the pattern. Looking at the second link, you probably don't need the pattern if you have the tool and know how it works, but I did buy the pattern. Have fun!
Info re the pattern:
http://www.quiltingboard.com/t-65306-1.htm
Idea:
http://www.quiltingboard.com/t-74576-1.htm