The typical polishing procedure is detailed, including the initial fiber preparation, the use of a ferrule, the multi-step polishing process with different grits, and the final inspection with a fiber microscope. Polishing finalizes the connector endface and cleans the surface, which has a direct impact on optical performance parameters such as insertion loss. This article explains the process of optical fiber polishing, which is crucial for preparing high-quality fiber endfaces for applications like fiber connectors and fiber splices. Part 2 describes the assembly of the fiber optical cable including installing the connectors. Your polishing process ensures your fiber optic connectors meet certain geometric parameters, industry specifications, and/or customer requirements.