Machine Sewn 2-Color Binding, (This means no hand stitching!)
Shared by Marilynn D. R.
Cut two coordinated but contrasting pieces of binding for your quilt. One will be 1/4 to 3/8″ wider than the other. The wider strip is the color you want to show the least. It will appear as piping inside of the quilt binding. You may vary the cut width depending on how much of it you would like to show.
Determine the width of the strips by deciding how wide a binding you will want to see when it is folded in half. My preference is to cut fabrics 1 1/2″ and 1 3/4″ as this makes a good looking binding that is easy to sew onto the quilt. For a slightly narrower binding try 1 1/4″ and 1 1/2″ strips.
Sew all the lengths of one color together end to end, then join lengths of the other color. Sew these long strips together the long way using a 1/4″ seam allowance. Press seam allowance toward the narrower strip.
Fold binding in half and press a nice crease. The wider side will create a lip, or what looks like a piping. This is the side that will be inside, NOT SHOWING, with only the piped lip showing on the front of your quilt.
This creates a very secure binding and is good for a quilt that will be used, washed, and loved much.