Enamel thinner is a solvent that is used to clean paint from spray gun nozzles. It is usually purchased along with enamel paint. It's a clear liquid that evaporates quickly, so it doesn't need to be cleaned up after usage. It can be used with different kinds of paint, but it's most efficient when cleaning up enamel paint. When used with a 3%-6% mixture of thinner, the paint comes off easily and will not affect the paint job. It's important to clean gun nozzles after each use of the spray gun, as paint infections and clogs can occur if left untreated. Enamel paint is one of the easiest paints to clean with thinner, but it's a good idea to warm the paint and gun beforehand. This way the paint will flow out easier, and the gun will be cleaner afterwards.