Copper powder fillers are more commonly used in resins for producing cold cast metal effects. Generally, higher amounts of metal powder are used to give a true metallic effect. Can be buffed, polished and a patina applied if required. Copper powder filler can be mixed with a variety of products including Forton, polyester, polyurethane and epoxy resins. Can be blended with bronze powder at 3:1 (bronze:copper) for unique non-ferrous effects. This Copper powder is a fine -200 mesh. Please note that the colour of the metal particles may vary between batches and can change over time due to oxidization. If you require a consistent colour, please order a quantity that is large enough to complete your project rather than buying smaller quantities as you need it.