[QUOTE=Nammie to 7;6779191]If you didn't want bias edges couldn't you just make 4 half square triangles, sew them together and then do the cutting? Is there an advantage to have everything be on the bias?[/QUOTE
Bias edges are a disadvantage to any block construction. If you started with 4 half square triangles and made them into the Hourglass block, it would be better. I just did the 12 and 1/2 inch size for the original method since some were interested in constructing this block the way it was shown but in a larger size.