Posted on April 20, 2010.
Types of Clay Silver explained - Precious Metal Clay and Art Clay Metal clay is a suspension of tiny particles of metal in a binder of clay, which can be used to make jewelry, beads and poor results. The beauty of metal clay is that it can be handled in the same manner as the clay, but once learned the liaison officers are burned, leaving intact the form of metal. Although there is a certain amount of shrinkage (10-15% for newer versions), very fine detail can be achieved, including impressions, which would require enormous difference in a different method of working metal.
Results in Clay Silver metal objects containing almost pure silver (also known as fine silver) which is ideal for glazing. There are two brands available - Precious Metal Clay (also known as PMC) and Art Clay Silver (ACS). Precious Metal Clay has been developed in the early 1990s in Japan and consists of microscopic particles of pure silver (or gold powder) and a binder soluble in water, which burns during cooking. The original formula of PMC (now called "Standard") must be baked in an oven at a temperature of 1650f and has a high withdrawal rates of nearly 30%. Two other versions were developed later called PMC +, which can be fired at 1490F and PMC3, which can be fired at temperatures as low as 1100F. Both versions of PMC have much lower rates of withdrawal, which allows much finer details to be worked into drawings.
Art Clay Silver (ACS) has also been developed in Japan, and is similar to the consistency of PMC +. The main difference is that the ACS can be fired with a torch in hand or in a gas oven. Because of subtle differences in the binder components and longer cooking time, ACS benefited from a considerably smaller percentage withdrawal - only 8-10%. This means that the ACS can be worked in more detail, without loss of definition in the job very well. Art Clay Slow Dry was introduced shortly after, which is much more working time before requiring fire, allowing a complex to be molded in clay, without loss of ductility.
650 and Art Clay 650 Slow Dry Art Clay are now increasingly popular because they not only have a longer working time, but can be fired at temperatures as low as 650C/1200F. This allows the integration jewelers glass and sterling silver in the designs without fear of damaging the components. AIDA, manufacturers have also introduced the ACS Oil Paste, a product used only on clay, metal shot or milled into fine silver overlay and paste that is designed for drawing designs on glass and porcelain. Both products have allowed the use of metal clay products to be incorporated into a new range of models and methods, increase the potential for this product.
Metal clays allow jewelers to work with material that is as malleable as clay plain, but produces fine (almost pure) silver jewelry of exquisite beauty and complexity. Once he has a polished luster and shine that is easily comparable to throwing money and because of product development on the withdrawal of the last years is no longer a problem. The type used depends on personal preference that both types have their advantages, but the pasta incorporating metals in your jewelry design gives you a new medium to explore with beautiful results.