I used the 10 degree ruler! One of our local quilt shops has them in stock. "Quilts by Gail", 401 W Chickasha Ave Ste 202, Chickasha, OK. 73018 Tel: 405-224-2280. I know they would be tickled to death to help. The name of the pattern is "Spicy Spirals" I ordered the pattern from
www.phillipsfiberart.com website. It arrived in just a few days.
Really, Really fun to make.