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"  (Illustration by Eleftheria Alexandri) Tyvek and Tape 1. Woven polyethylene Tyvek house wrap makes a fine, if heavy, kite-skin substitute for standard nylon spinnaker cloth. Tyvek fastens with 2-inch tape instead of stitches. Cut two Tyvek cells to 12 x 82 inches. Join them into a circle. Fold the edges over 1/4 inch to prevent fraying.  Dowels 2. Cut four 36-inch-long 1/4-inch-diameter dowels and eight 18-inch-long 1/4-inch-diameter pieces. Short dowels span the kite as spars. Tape the long dowels, the longerons, inside each corner. Slip dowels into pockets or tape them at each end. Vinyl Tubing 3. Join the dowels with 2-inch lengths of 1/4-inch-inside-diameter vinyl tubing, slit partway across so that it bends into an L. Fit a dowel tip into each L end at the joints, using two tubes where spars cross. Use 40 inches of tubing to make 20 joints. Bridle Line 4. To attach 50-pound bridle line to the cells, thread line into a sewing needle, slip the needle into the Tyvek and tie a knot around the longeron at the points shown. Merge the lines at a \u00BE-inch tow ring. Leave 30 to 39 inches of line from the tow ring to the cells. Wind above 10 mph? Wear gloves. "^^<http://www.w3.org/2001/XMLSchema#string>
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