Copper foil is a thin sheet of copper that is often used in various applications, including electronics, crafts, and construction. It is flexible and can be easily cut, shaped, or adhered to different surfaces. In electronics, copper foil is commonly used for creating printed circuit boards, where it serves as a conductive pathway for electrical signals. In crafts, copper foil is popular for stained glass projects, allowing artists to join pieces of glass together. Additionally, it can be used in DIY projects, such as creating decorative items or enhancing artwork. Its versatility makes copper foil a valuable material in both industrial and artistic fields.