I only cut into yardage for scraps if it is a fabric I really don't like. I'm a batik girl and if I get a muddy color, I'll cut it down. Usually my scraps are cut from strips or triangles that are trimmed off blocks. Though I have been known to cut into fq or precut size when my scraps run out of brights. If the scrappy quilt needs reds or yellows I go into my color bins and pull the smallest piece in there to cut from.