Book excerpt: Autodesk(R) Inventor(R) 2020: Advanced Part Modeling is the second in a series of guides on the Autodesk(R) Inventor(R) software that is published by ASCENT. The goal of this guide is to build on the skills acquired in the Autodesk Inventor: Introduction to Solid Modeling learning guide by taking users to a higher level of productivity when designing part models using the Autodesk Inventor software. In this guide, the user considers various approaches to part design. Specific advanced part modeling techniques covered include: multi-body design, advanced lofts, advanced sweeps, coils, generative shape design, surface modeling, and Freeform modeling. Material aimed at increasing efficiency includes: iFeatures for frequently used design elements, iParts for similar designs, and how to work with imported data. The guide also covers some miscellaneous drawing tools, such as: custom sketches symbols, working with title blocks and borders, and documenting iParts. Topics Covered Advanced model appearance options 2D and 3D sketching techniques Multi-body part modeling Advanced geometry creation tools (work features, area lofts, sweeps, and coils) Analysis tools Generative shape design using Shape Generator Creating and editing basic surfaces, importing surfaces, and surface repair tools iFeatures and iParts Importing data from other CAD systems and making edits Working with AutoCAD DWG files Freeform modeling Emboss and Decal features Advanced Drawing tools (iPart tables, surfaces in drawing views, and custom sketched symbols) Adding notes with the Engineer's Notebook Prerequisites Access to the 2020.0 version of the software (or later). The practices and files included with this guide are not compatible with prior versions. Future software updates that are released by Autodesk may include changes that will not be reflected in this guide. The material assumes a mastery of Autodesk Inventor basics, as taught in Autodesk(R) Inventor(R) Introduction to Solid Modeling. Users should know how to create and edit parts, use work features, create and annotate drawing views, etc. The use of Microsoft Excel is required for this guide.