Creative Grids Circle Savvy Quilt Ruler (CGRSAV1) Cut circles, semi-circles, & quarter-circles from 3in to 15-1/2in and every 1/2in in between. Cut a freezer paper template to the finished size & cut the fabric 1/2in larger to add the seam allowance. If you prefer piecing curves, cut the background and the circles with the same ruler. Gripper holds the fabric in place while cutting, eliminating slipping and miss-cuts. Scan the QR Code printed on the ruler to view a video demonstration.