Application : The application surface must be clean and dust free. For flat, shiny surfaces (like metal, glass) roughed up the material to let the adhesive to penetrate deeply. Also moisturize the surface, improves the adhesion performance. Apply the adhesive with a thin layer. Keep the pieces together and clamp it 20 minutes. Fresh adhesive can be cleaned with acetone but cured adhesives must be mechanically cleaned. After each use, clean the nozzle part, try to remove the air from the bottle. This will help to eliminate moisture in the air and increase the life time.