From here on, handle the work only by the edges. When the metal is thoroughly clean water will “sheet” or cover the whole surface rather than bead up. 2K EcoBright Cleaner provides an effective organic acid based green alternative when fine detail may be dissolved by use of strong acids. 2K Metal Cleaner is a fast acting strong acid metal brightener for severe tarnish and oxide removal. When grease is present clean the work with a TSP solution or blend of ammonia, soap, and water.ĢK Technologies manufactures and recommends the use of 2K Metal Cleaner or 2K EcoBright Cleaner for optimal performance. If this method is undesirable then non residual solvents such as acetone, isopropyl or methyl alcohol, or lacquer thinner are useful for removal of most oils and waxes. The best method of cleaning most materials is to sandblast. Ensure that all oils, waxes, flux remnants, mold release agents, and oxides are removed from the metal surface. It is important to clean the metal before any coloring operation. These solutions allow the natural process of patination on colored metals that naturally occurs over great time periods to be accomplished in a substantially shorter time frame with more predictable results.ĢK Blue patina solution may be used directly on the colored metal surface (copper, bronze, brass) or over 2K Antique Black patina background. 2K patina solutions are water based metal salt solutions based on historical formulations for use by the modern day patina artist.