Cut 15° wedges for Stack-n-Whack ™ kaleidoscope, scrap, and six-blade fans as well as other variations using this handy ruler. Includes instructions and illustrations for using a rotary cutter for strip, scrap and selective cutting methods. The instructions take you beyond cutting to piecing each arc, applying the trim and appliqueing fans to a background fabric. As an added bonus, ruler includes pattern for making Fan Throw quilt.