Knife-edge pillows are plump in the center and flat around the edges. These simple pillows can be made in half an hour. Use the knife-edge pillow directions to make removable pillow liners. Sew liners from muslin, sheeting, cotton sateen or similar fabrics. Cutting Directions Cut front and back 1″ (2.5 cm) larger than finished pillow or liner. For hook and loop tape or zipper closure, add 1-1/2” (3.8 cm) to back width; for overlap closure, add 51/2”’ (14 cm).

YOU WILL NEED Decorator fabric for pillow front and back. Lining fabric for pillow liner, front and back. Pillow foam or polyester fiberfill. Use 8 to 12 oz. (227 to 360 g) fiberfill for a 14″ (35.5 cm) pillow, depending on desired firmness. Zipper or other closure (optional) How to Make a Knife-edge Pillow or Liner

1) Fold front into fourths. Mark a point halfway between the corner and the fold on each open side. At corner, mark a point 1/2″ (1.3 cm) from each raw edge.

2) Trim from center mark to corner, gradually tapering from the edge to the W’ (1.3 cm) mark. Taper from W’ (1.3 cm) mark to center mark on opposite edge. 3) Unfold front and use it as a pattern for trimming back so that all corners are slightly rounded. This will eliminate dog-ears on the corners of the finished pillow:

4) Pin front to back, right sides together. Stitch 1/2” (1.3 cm) seam, leaving opening on one side for turning and stuffing. Backstitch at the beginning and end of seam.

5) Trim comers diagonally, 1/8”” (3 mm) from stitching. On pillows with curved edges or round comers, clip seam allowance to stitching at intervals along curves.

6) Turn pillow right side out, pulling out comers. Press the seams. Press under the seam allowances in the opening.

7a) Insert a purchased pillow form into the pillow, or stuff the pillow with polyester fiberfIll as in step 7b, below. Use a removable form or liner in pillows that will be dry-cleaned or laundered.

7b) Stuff pillow or liner with polyester fiberfill, gently pulling pieces apart to fluff and separate fibers. Work filling into comers, using long, blunt tool such as a spoon handle.

8)  Pin opening closed and edge stitch close to folded edge, backstitching at beginning and end of the Stitching. Or slipstitch opening closed. {Credit} Singer sewing for the Home (copyright 1984-1988)