This product can be used to bond plastic, resin, photoetch, some metals and similar materials. Hold the pieces together for 10-15 seconds to ensure proper adhesion. The black color makes the glue highly visible, and after drying, the black cyanoacrylate can be easily sanded and cut. The black color separates the glue from the surface and makes it easier to sand off the excess, which allows you to use this product as a putty and further strengthen the seam. It is ideal for filling joints between large parts such as an airplane fuselage, a tank body, or any other gaps in the plastic parts of your models. Make sure the container is tightly closed to prevent hardening. Use the adhesive with appropriate protective equipment, including gloves, clothing and eye protection, when working in a well-ventilated area. Store in a cool place for longest shelf life, ideally 16 °C (60 °F). Avoid contact with skin and eyes.