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: The Compound of Two Cubes The Compound of Two Tetrahedra The Compound of the Octahedron and the Cube The Compound of Three Cubes The Compound of Five Octahedra The Compound of Three Octahedra The Compound of Three Tetrahedra The Compound of the Icosahedron and the Dodecahedron The Small Triambic Icosahedron (STI) and The Compound of the STI and the Dodecahedron. 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.