A band saw blade is a long, continuous strip of metal with teeth along one edge, designed for cutting various materials like wood, metal, and plastic. It operates on a band saw machine, which uses a rotating wheel to move the blade in a continuous loop. The design allows for precise cuts and can handle intricate shapes and curves. Band saw blades come in different sizes and tooth configurations, tailored for specific cutting tasks. Common types include bi-metal blades, which combine flexibility and durability, and carbide-tipped blades, known for their longevity and ability to cut hard materials. Proper selection and maintenance are essential for optimal performance.