After seeing the Christmas tree tut on here, I so wanted to try it!! I checked at local stores to find the 9 deg ruler..with no luck. So I decided to make one..I have a dresden plate ruler that I knew was 18 deg since it makes 20 wedges so I traced that pattern without the seam allowance, folded it in half (using gift wrap because of size) traced it and added back seam allowances..walla...After transferring to cardboard I now have a free ruler. Very proud of myself!!