Stained Glass Finishing Compound is a must for your copper foil projects! This 100% Carnuba wax product ensures a bright, even, durable finish on raw solder and solder seams treated with patina. It polishes and protects against tarnish for professional results. It also cleans and waxes the glass to a high shine. Also known as Kem-o-Pro, no soldered project is complete without the final shine of Stained Glass Finishing Compound.