There are different techniques used to achieve a metallic finish with resin.  "Cold-Casting" is a term used to describe the process of mixing metal powder with  a translucent casting resin like Smooth-Cast® 325 and applying the mixture into a mold.  The finished casting give the appearance and weight of solid metal.  The metal cold-casting process is faster and much less expensive compared with foundry casting of molten metal.  Different metal powders such as Bronze, Brass, Nickel Silver, Aluminum and Copper can be used depending on the desired effect.

We've recently added an additional step that involves wiping the finished casting with mineral spirits before abrading the surface with steel wool.  We discovered this notably improves the finished cold cast metal effect.