Felt has earned and deserved a reputation for centuries for outperforming all other polishing materials. Felt provides the perfect "home" for polishing compounds and slurries of all types. Here are the secrets of felt's success: Felt's porosity accepts fine abrasive particles and continually presents an even, sharp, cutting action. The resiliency of felt helps to conform the polishing surface to the part. As felt wears, it always presents an identical medium for polishing compounds. The ability to machine felt to close tolerances makes it possible to offer the exact felt profile required to match the profile of the part.