What is etching primer?

Etching primer is a type of primer that is specifically designed to promote adhesion on bare metal surfaces. It contains chemicals that help to etch or roughen the surface of the metal, creating a strong bond between the surface and the paint that is applied over it.

Etching primer is typically used on surfaces that are prone to corrosion, such as iron, steel, and aluminum. It is commonly used in automotive applications, as well as in industrial and marine settings where exposure to harsh environments is common.

When applying etching primer, it is important to follow the manufacturer's instructions carefully and ensure that the surface is clean and properly prepared before applying the primer. It is typically applied in thin, even coats and allowed to dry before applying paint or other topcoats.

Overall, etching primer is a valuable tool for promoting adhesion and improving the durability and longevity of paint on metal surfaces.