A cutting tool is a device used to remove material from a workpiece through shear deformation. These tools are essential in various manufacturing processes, including machining, drilling, and milling. Common materials for cutting tools include high-speed steel, carbide, and ceramic, which provide durability and precision. Cutting tools come in various shapes and sizes, such as drills, end mills, and lathe tools. Each type is designed for specific applications, allowing for efficient shaping and finishing of materials like metal, wood, and plastic. Proper selection and maintenance of cutting tools are crucial for achieving optimal performance and extending their lifespan.