Adjustable Ring Tutorial
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This design got it's name from a contest held on the forum here at Etsy. All 6 of the winners mentioned fans. I really liked the idea of Japanese fans, so instead of using the English name, I decided to use the Japanese word for folding fan, "Sensu" (one of the words I found anyway... hopefully it's correct).
You can find this tutorial in the tutorials section of my Etsy shop.