Insert molding is another type of injection molding (IM) process: In this process an insert is placed in the mold either manually or through automation before injecting resin material around it to secure it in place. This insert can be made of different types of metal, including steel and aluminum and/or non-metal components. In some instances, the inserts are simple designs such as electrical leads, fastener, pins, or sheet metal. Other times, wire meshes and plates are used as inserts, strengthening the final product of the injection molded unit. These are not the only options for injection molded inserts—more complex designs can also be molded as inserts.