I will no longer use the scant seam. Both times I have used it has been on high quality cotton fabric and both times the seams have frayed so bad in places that it is in need of repair before it is even used. I am trying to figure out how to change things to use a one half inch seam in everything I make. I have decided that adding 1/4 in to each side of a piece will do that. So if I want a 5 inch block I think I would cut it 6 inches to accomplish this.
If someone can give me a better clue I would appreciate it.