WOF is easier to cut, does not strech as much and is really not a fabric waster. Cut you strips as wide as you want the border and they should be 40-42 in long. Figure ou the total inches need to go around the quilt divide by 40 and that is how many strips that you will need. Cut one extra strip to allow for diaginal piecing of the strips. Diaginal piecing seams does not show as much as straight but they do take more material. Extra material? same for another project!