This document summarizes an experimental investigation into milling fiber composites. The study examined how milling speed, feed rate, and depth of cut influence cutting forces like thrust and torque. Experiments were conducted on carbon fiber reinforced polymer composites with fiber orientations of 0, 45, 90, and 135 degrees relative to the tool motion. Results showed that fiber failure mechanisms depend on orientation, with crushing failure at 45 and 90 degrees producing higher forces than bending failure at 0 and 135 degrees. Chip morphology and delamination patterns supported the proposed failure modes. The research provides insight into fiber failure during milling of composites to optimize machining parameters.