This chapter extends oblique axonometric techniques to the representation of complex three-dimensional solids. Starting with polyhedra and progressing to ruled and curved surfaces—such as helicoids, quadrics, and toroids—it presents methods for accurate geometric construction and projection. The chapter emphasizes the importance of visual reasoning and proportional relationships in creating readable, accurate, and scalable images. It also addresses aggregate forms and symmetry operations. Special attention is given to the implications of projection direction on the deformation and readability of the volumes. This section consolidates and applies the concepts introduced in earlier chapters to volumetric geometry.