大象传媒

Sophie Ryder is a sculptor who makes large metal animals from steel. Most of her work is placed outside so to stop it from rusting it is galvanised - the sculptures are dipped in zinc. Zinc is a metal but at temperatures of 450 degrees Celsius it becomes a liquid. Zinc is used because it does not rust like iron or steel. In the zinc bath, a chemical reaction makes the zinc stick to the metal forming a protective coating. If the galvanising is not damaged it should last up to a hundred years.