👉 A knotter is a type of machine or tool used for cutting, shaping, and manipulating shapes made from metal, wood, or plastic. They are often found in woodworking shops, home improvement stores, and other construction-related industries. Knotters typically have a handle that allows them to manipulate the material they're working with. They use specialized tools like knives, saws, and other cutting equipment to create intricate patterns on the surface of the metal or wood. Knotters are commonly used for