Use the Starmaker 8 to cut the tube. All outside edges will be on the straight of grain. An envelope, or pillow finish requires a backing fabric cut the ame size as the quilt top. The two qpieces are then sewn, right sides together, with or without batting. Weave and pin the two strips, wrong sides together.
Baste zigzag the raw edges.
Finish by sewing the backing, top and batting together in an envelope style finish. The strip of Prairie Points is added right sides together to the quilt top. Use a piping foot or a zipper foot and sew through both layers of fabric and piping. Turn fabric right sides out. Measure the width of strip from this basting line to the top of the piping.