To produce some parts with complex structures but demanding materials, lost wax casting is a very good choice. Lost wax casting can form parts with complex structures and can be produced using different materials to meet the needs of various industries. However, if the design of the lost wax casting needs to be modified, the corresponding lost wax casting mold needs to be modified to achieve the final purpose of modifying the product; if the parts are CNC machined, you only need to modify the processing program and then reprocess the parts to achieve the purpose of product modification. From this aspect, the production changes of investment casting parts are not as convenient as CNC machined parts.