Copper Powder 325-Mesh - 5-lb. by ArtMolds for Cold Casting and Molding

This is a fine grade of 325 mesh ArtMolds Copper powder is the correct fineness for cold casting. Limestone is added to polyester resin, polyurethane resin, epoxy, gypsum cement or other binders. Small objects are cast and cured in suitable molds. To conserve material when casting large pieces, you can dust (salt) the mold surface, brush a thin coating on the surface, spread or roll the metal on or spray a thin coating. The mold is then back filled with resin or fiberglass, iron or steel shot, sand, or calcium carbonate to increase the weight to give it the heft and feel of carved stone. a hot foundry ‘pour.’ You can also use limestone powder mixed with resin for wood inlay work.

• Fine grade of 325 mesh the correct fineness for cold casting.
• Stainless Steel powder is added to polyester resin, polyurethane resin, epoxy, gypsum cement or other binders.
• After curing and removal from the mold the object must be gently abraded or burnished with fine steel wool (triple 0 grade), a Scotch Brite® pad, or sand blasted to remove the microscopic film of binder from the surface of the metal particles.
• The object will have the authentic look and feel of a carving
•  That is because the surface is now true stone. It then can be naturally oxidized or patinated to achieve an antique look.