AMACO-PolyCutters. Set 6 includes ovals and circles in various sizes. Cut shapes in polymer clays such as Fimo, modeling clays and Friendly Plastic. Polycutters let you incorporate a variety of geometric, flower,heart and leaf shapes into you Friendly Plastic and polymer clay wearable art projects. They are as easy to use as cookie cutters and allow you to create perfect shapes every time without having to cut them out with scissors.