Create with an incredible artistic range Copper is an economical way to create large pieces and sculptures. It s also great for creating jewelry, jewelry components, custom-crafted specialized tools or working with enamels. COPPRclay can be pinched, rolled, sculpted, cut or manipulated. The binder will burn away, leaving a solid, pure copper object. You can even practice new techniques or design ideas using COPPRclay then apply your new skills to precious metals. Shrinks about 20% during firing. 200 gram package. COPPRclay must be embedded in activated carbon during firing.