It amazes me that English paper piecing is still so popular. Why whip stitch when you get better results from simply sewing a short running stitch on the seam line. I cut out a hexagon template with seams included, then poke a large needle in each seam line intersection to make a tiny holes. Then when I mark for cutting, I put the point of a mechanical pencil into each hole and make a tiny dot. These are the beginning and ending marks for sewing the seam line. Takes about 10 running stitches for one seam. There are eight of us in my quilting class making king-sized quilts in this manner. Not a whip stitch in sight! And it's fast. Much faster than folding edges over paper, basting, then whip stitching.
SandyQuilter