This chapter discusses the three methods of creating revolved, swept, and lofted features, which are commonly encountered in machine parts. These features are commonly found in automotive assemblies; therefore, a proper understanding of how to model these parts is essential. The Revolved Boss/Base tool rotates a contour about an axis. It is a useful tool when modeling parts that have circular contours. Two practical examples are given based on the principles of revolved parts. One is the engine cylinder, which is commonly used in automobile design, and the other is pulley, which is commonly used in power transmission. Two practical examples are given based on the principles of lofted parts. One example is an impeller that is commonly used in a compressor, turbine design, and the other is an aircraft wing. Threaded parts are modeled using a helix as the path and a shape of interest swept through the path, as the profile.