Silver clay or metal clay is a combination of water, binders, and small particles of either silver, gold or alloys of copper. These clays are molded by hand into a desired shape then heated in a kiln or torch to remove the binder and fuse the metal powder into a solid form. The result retains all the marks of the maker, transformed into a precious and durable object.
Precious metal clay and art clay are two different brands of clay-like materials that shape easily, then amazingly fire into a pure metal object! Pmc and art clay silver can be formed and worked just as you would clay, shrinkage (8-12%). All are perfect for creating sized designs, such as rings and earrings. They fire at a low temperature in a short time! Allowing firing with a propane torch, or even on the gas stove top.
Copper based clays base metal clays copper, bronze and white copper differ from precious metal clay because the metals oxidize (tarnish) in the presence of oxygen. That is what makes precious metals precious, they don't tarnish. Copper based clays need to be fired in a container of activated charcoal according to each type and brand of clay's instructions.
Types of silver-clay
Pmc3 and art clay silver are the most popular types of silver-clay, they fires the lowest temp and are easy to work with. They are available as a slip and in a syringe.
Clay type-the standard product of precious metal clay. Most of molding work is done with this type. Shape and mold the clay just as you would work with ceramic clay. Pmc3 and art clay fires harder and shrinks less than pmc+. It is a little less plastic to work with. Pmc+ shrinks 12%, fires .999 pure silver. Pmc3 (and art clay) . The primary difference is in its firing Temperature which is significantly lower than the other versions.