Canfield's Ultimate 63/37 solder is a premium choice for stained glass artists. Made through a specialized process, it combines tin, lead, and two additional metals to deliver superior performance. This solder transitions instantly between solid and liquid states, eliminating the pasty range and ensuring smooth, even seams with no wavy heat lines. With a melting point of 361°F, it's perfect for creating strong, decorative solder lines in one pass. Its 1/8" thickness and quick setup make it ideal for intricate stained glass work. For optimal results, use a rheostat to control your soldering iron.