Using the Polish Machine Instructions: 1. Cutting Fiber After removing the ferrule from the oven, use a fan to blow the ferrule to cool it down. The document is intended to inform and educate about polishing processes and commercial automated polishing equipment with various fixturing in order to achieve a stable low insertion loss, targeted return loss, acceptable 3D endface geometry, and defect free visual fiber. Modern fiber processing machines are equipped with automatic end-face curvature adjustment systems (APC/PC end-face polishing), which precisely control the spherical radius of the fiber end-face for optimal optical contact. Additionally, there are tips to consider applying during daily production to improve first-pass.