A new type of copper powder has been produced. Powder production is made a part of the process of electrolytic refining of copper. In a sense, therefore, the powder is a by‐product of the refining operation. Great potential economy is possible, but can be realized only with large‐scale production of this powder which in turn awaits development of uses for the powder. Laboratory development is discussed historically. The authors' preferred method is to apply castor oil, previously oxidized with a small amount of perchloric acid, to a rolled sheet cathode and then electrolytically deposit copper as a powder, using the same equipment and electrolyte used in the multiple system of copper refining. The product is a mass of fine metal flakes which are coated with the oil used upon the cathode. The powder is useful as an intermediate for bronze powder but does not have the properties necessary for sintered metal products.