Catalog > Consumer Electronics > Electro-Chemicals > Chemicals Copper Metal Powder 250g Copper Metal / 250g Powder Copper Metal Powder 250g Part No: COPPER METAL POWDER 250G 277.78 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Copper Metal Powder "Cold-Casting" is a term used to describe the process of mixing metal powder with a resin and applying the mixture into a mold.The finished casting gives the appearance and weight of solid metal.Powders include bronze, brass, copper, aluminum and nickel/silver (for a pewter-like effect).