Let's put it like this. I just made a baby quilt using scraps, some were so small I had to cut off grain to get the size needed. I have been sewing for 60+ years and having straight seams. or in this case, strips, was never a problem. I sure wouldn"t want anyone to look closely at this one!! And I used the starch before I cut too!! My seam allowances were even, but some of the strips had enough off grain to make then pull funny . I'll stick to straight grain!!