I'm making mine with 60 degree diamonds, each side is 5 inches. I'm not sure the technique used on the quilterscache site would work for me. But maybe because I am still so new to quilting, that the Y seams don't seem to bother me yet. I've got 4 blocks done so far. I notice that I have to use my disappearing ink pen to mark all my seams. I'm trying to keep my seams perfectly straight and the only way I can do that is by marking them. I also put a little dot where the seams meet so I know where to back stitch.