The compression molding process is well known for its ability to produce highly complex, high-strength parts. This book not only covers the advantages and disadvantages of the molding operation with SMC/BMC (thermosetting) and GMT/LFT (thermoplastic) materials, it also provides the reader with relatively simple models for monitoring, troubleshooting, and quality control of their processes. Also covered is the important role of fiber reinforcement: how the quantity of fiber, the fiber length, and fiber orientation influence part strength and stiffness and how to calculate fiber breakage.