The toughness of PEEK makes it highly prone to burring during machining. We recommend four methods for effectively removing burrs:
Adding chamfer features to the material's edges to eliminate any burrs that form. Glass-filled or carbon-filled PEEK materials are recommended over common types of PEEK that are vulnerable to burrs. Using sharp tools, preferably diamond tools, as a preventative measure against burring. Using a secondary machining operation, specifically designed to remove burrs.