Marti Michell Winding Ways Templates Perfect Patchwork. Marti Michell's fast, easy and accurate quilt blocks by combining strip techniques with Perfect Patchwork templates. Laser cut accurate acrylic templates with quarter inch seam added and double blunt corners for perfect sewing alignment everytime. Perfect for rotary cutters and machine or hand piecing. Thick acrylic clear plastic - made for rotary cutting again and again (as thick or thicker than your rotary ruler!). This template set includes templates for 8-1/2 in. finished blocks.