I have read books that recommended piecing the border on the bias to make the pattern flow better. I've never used one of the gorgeous big borders (because I never seem to have the perfect fabric), so I've never tried it. However, I do have a question. Doesn't this introduce stretchiness where you least want it, on the outside of the quilt? I have never quilted something with bias on the outside edge, but I wonder if this is a problem when quilting, especially for longarmers who need to stretch the fabric on a frame?