Gotham Lacquer Thinner Lacquer thinner is a very versatile product. It can be used to thin lacquer and epoxy. This product is also ideal for cleaning spray degreasing tools and paint spray guns used in body shops. It cleans oil, grease, tar, varnish and degreases metal bars. It also removes gum, resin, ink and other adhesives stuck to chemical resistant materials. This product is more powerful than mineral spirits and is more flammable.