AutoCAD 2021 for Engineers and Designers- 3D and Advanced textbook introduces the readers to AutoCAD 2021, one of the world’s leading designing and drafting packages. In this textbook, the author has explained the concepts, tools, and commands in detail with the help of examples. The author has laid special emphasis on the applications of books and commands to create 3D objects. The chapters in the textbook are structured in pedagogical sequence that helps the readers to understand the concepts faster and learn the capabilities of the software easily and effectively.