On those snowball blocks and others where we use a square and sew on the diagonal and trim the block. Couldn't we use a square that's a quarter inch larger and mark a line 1/4" either side of the diagonal with one of those little rulers that allow you to do that. When you cut off along your line, couldn't you use the other half for the opposite side of the block. Or would it be too much work? Of course you'd have to sew the other half on the bias. It just seems like so much waste.