FiberForm consists of a three-dimensional network of rayon-based fibers with no surface treatment. During manufacturing, the fibers are pressed together and the plane where pressing is applied is referred to as the compression plane, or "in-plane." The fibers orient at an angle of ±15 o relative to this plane . The study of a carbon fiber network, like FiberForm, can reveal the extent to which conclusions from the oxidation of model systems can be useful to understand more complex engineering materials.