These machines are used in manufacturing to create holes, slots, and other special features. A CNC slotting machine is a computer-controlled machine tool that cuts slots in metal or plastic parts. The CNC machine can be programmed to cut the same profile on a number of parts quickly and accurately. CNC Slotting Machine is a machine that employs computer-controlled cutting tools to cut parts from a sheet of metal or other material. The CNC Slotting Machine is used in various industries for different purposes. It is used in the automotive industry for making car parts, as well as in the aerospace industry for making airplane parts.