I'm fascinated by the look of stack and whack kaleidoscope quilt blocks. Is there a special ruler made for cutting these? I was shopping for a ruler to cut these, and the 60 degree rulers aren't right, you only whack 6 pieces, not 8? I have a pattern where you cut your own template,but I wondered if there was a stronger ruler that was made to cut these. It is something I can look for in Paducah in 2 weeks. Can't wait to go!