A router can be used on various materials other than just wood. While it is primarily designed for woodworking applications, routers equipped with different bits can also handle other materials such as plastic and even soft metals like aluminum or brass. This broadens the possibilities beyond traditional woodworking projects and allows you to explore different creative avenues. However, it's worth noting that when working with non-wood materials like metal or plastic, you may require specialized bits specifically designed for those materials to achieve optimal results. As always, it's important to follow safety guidelines and choose appropriate tools and accessories depending on the material you're working with to ensure both efficiency and safety in your routing endeavors.