The Relationship Between SPI Mold Polishing Grades and 3D Mold Polishing Grades
The following diagram shows the SPI standard mold polishing grade table, from which the polishing grades A~D in the mold industry originate. The A-grade claimed by 3D mold manufacturers also comes from here. There are four columns: ~ The first column is the grade code ~ The second column is the abrasive, tool, and polishing … Read more