When it comes to automotive glue for plastic to metal, there are various tricks and tips involved. Gluing plastics to metals involves bonding two non-porous and dissimilar materials. When applied in the automotive industry, there are several tips and tricks needed. Plastic and metal bonded materials when used in the automotive industry are subjected to extreme conditions. Unlike regular plastic/metal home products, they have peculiar performance requirements. This is why great care should be taken when bonding both parts together.