STORAGE AND SHELF LIFE
COPPRclay™ is sealed in an air-tight foil package to preserve its freshness. Keep the clay inside the package, and keep the package in a water-tight plastic container (a take-out soup container works great!). Add a wet sponge or wet paper towel to the container, making sure the clay doesn't touch the sponge or the paper towel. Use the original package or a good-quality plastic wrap to keep your clay moist. It is good practice to take out only what you will use within a few minutes and to add a few drops of water to the lump at the end of each work session. COPPRclay can be rehydrated if it dries out, though it can be difficult to achieve the homogenous consistency of fresh COPPRclay. To restore dry material, pierce the lump with several holes or dice it into small pieces. Add water and knead, then seal the clay and water in a water-tight container in a hydrated atmosphere such as a humidor. Set the container aside to allow the water to penetrate; allow at least one full day, more if the clay was very dry. With the clay still wrapped in plastic, knead repeatedly to force the water into the dense metal structure. If you find you have added too much water, spread the clay on a piece of plastic, glass or waxed paper and allow it to dry to a useable consistency.
