In this book, fused deposition modeling (FDM) is described with focus on product quality control and enhancement. The book begins by introducing the basics of FDM and its associated process parameters. Then, strategies for quality control and enhancement are described using case studies of both original results by the authors and from published literature. Resolution and print orientation, multi-objective optimizations and surface engineering are identified and discussed as the strategies for enhancing the quality of FDM products in this book.