A book of ten geometric models of advanced modular origami designed by Fergus Currie with full instructions and diagrams on how to make the following Models: 1. Rhombic Triacontahedron S1 2. Rhombic Triacontahedron S2 3. Rhombic Triacontahedron S5 4. Rhombic Triacontahedron S8 5. Rhombic Triacontahedron S9 6. Rhombic Triacontahedron S25 7. Rhombic Triacontahedron S27 8. Rhombic Triacontahedron S45 9. Rhombic Triacontahedron S85 10.Rhombic Triacontahedron S105 It also includes an introduction with sections on the mathematics behind the models; a short history of modular origami; a section on tools and folding techniques, and a gallery of the finished models that are presented in the book.