I purchased the square in a square ruler at the local quilt show, they said that you would never have to cut or sew a half square triangle again. I bought the ruler and DVD, came home and watched the video, then I went to the cutting table and cut and sewed just like the video instructed and OH My, it is amazing!! I love this ruler, I can make a square in a square, half square triangle flying geese, star patterns and every time they are perfect as long as my center square is cut accurately...I am in love with this.
Check out the website.
http://www.squareinasquare.com/r-8-o...page-book.aspx