Just finished clipping all the little dog-ears from 280 - 2 1/2" unfinished hourglass blocks for the Orca Bay mystery quilt by Bonnie Hunter. I am using blue where Bonnie is using black. I thought for sure that I had the Companion Angle ruler that Bonnie suggests, but when it came time to cut, I didn't have it!! I had the Fons and Porter Flying Geese ruler and I got the same result by using this ruler. I didn't need to square up my blocks. They came out perfect. I only need 224 of these cute little blocks for the quilt, but I got carried away. I will have some left over to make a pillow.