A CNC edge grinder with a second change wheel is a machine used for grinding and polishing the edges of materials such as glass, stone, or metal. The second change wheel allows the operator to quickly switch between different grits or types of grinding wheels, allowing for more efficient and precise edge grinding.

This type of machine is typically used in manufacturing and fabrication industries where precision edge grinding is required. The CNC control system allows for precise control over the grinding process, ensuring uniform and consistent results.

Overall, a CNC edge grinder with a second change wheel is a versatile and efficient tool for edge grinding applications, providing high-quality results with minimal effort.