A small glimse of how I made the piece "Extrude Circle".
First I made the abstract pattern in Adobe Illustrator, which resembles a big bumch of nothingness. Using the bend tool to make it a round shape and do some touch ups. Import the paths in C4D as a *.ai and extrude the heck out of them. The rest are render settings, materials and patience to wait til the little Macbook finished the render. Final grading, effects and some grime was added using Photoshop.
Write me if you are interested in the project files, assets and more to fiddle around with them.