There are a variety of materials that can be used in additive manufacturing, including 1. Metals 2. Plastics 3. Composites These materials have pros and cons depending on the application. For example, metals are strong and durable but can be pretty heavy, while plastics are lightweight but may not be as strong or long-lasting. Composites can offer the best of both worlds in terms of strength and weight but can be more expensive than other materials.