This book covers fused deposition modeling (FDM) from its fundamentals to research advances including developments in FDM machines, development of polymer materials, novel applications, process modeling, simulation, and optimization backed by case studies and research results. It explains the effect of important FDM parameters on part quality, appropriate methods for testing and characterization of FDM-fabricated parts, FDM of composite materials, process monitoring and control. It also covers applications of FDM process in automobile, aerospace, biomedical, pharmaceutical, and tissue engineering. Key features: Provides all the necessary fundamental details and advancements in FDM Details novel ways of fabrication of complex and intrinsic parts by using different types of plastics and polymer materials Covers fabrication of miniature devices by FDM Discusses finite element analysis, modeling, optimization, and sustainability rating, for FDM Includes monitoring and control, intelligent processing, and application of artificial intelligence (AI) and machine learning (ML)-based part fabrication This book is aimed at graduate students and researchers in materials science and manufacturing.