PC3ST (3/8" Star) In the picture, the 3/8" star is the smallest one on the end. Pattern Cutters are used to cut various shapes and sizes of clay, bread dough, or gum paste to create animals, faces, flowers, trims and other decorations for jewelry, frames trinket boxes and much more. Use the inside pattern shape or the outside pattern cutout. With a cookie cutter like action, the inside plunger allows you to pop out the clay inside. Cut through the walls for candles or pressing into the surface of clay for designs of shape outlines. Cutters are made of rust-free brass with a spring-returned Plunger.