How to Customize Your Flip-Flopscomments (6) June 28th, 2013
Make the fabric straps
Anything is possible when it comes to fabric selection for the straps: silk charmeuse, leather, twill, dupioni.
You can also use ribbons of various widths, twill tape, even cotton webbing. And feel free to embellish the straps.
1) Sew a fabric tube. Cut a 5- by 17-inch strip along the straight grain. Fold wrong sides together, and sew the long edge with a 1/2- inch seam allowance. Turn right side out. Cut a 1 1/2- by 10-inch bias strip for the loop between-the-toes. Sew into a tube and turn.
2) Make holes for the straps. From the underside sole, poke holes through the insole using an awl. Cut tiny slits through the insole, and brush with Fray Check. Fold the strap in half, and add the bias loop over the center, as shown. Pull tight until the loop pinches out the tie.
3) Knot and secure with glue. Thread the straps' raw ends into the toe hole. Try on the flip-flop and adjust for comfort; knot on the bottom. Thread the other two ends into the other holes and knot them. Trim the ends. Fill the cavities around the knots with craft cement. Let dry.
excerpted from "Flippity Flops" in Quick Stuff to Sew, Spring 2008, p. 72-73