The chapter Modifying 3D Solids contains the following topics

Unifying of 3D Solids or Regions

Subtracting of 3D Solids or Regions

Intersection of 3D Solids or Regions

Chamfering edges of 3D Solids

Filleting edges of 3D Solids

Create 3D Solids with wall thickness

Create a Cross Section of a 3D Solid

Create a Flat Representation of a 3D Solid