This recommended practice establishes procedures for the application of long string abrasive fibers to machined aircraft structures for the purpose of removing burrs produced during the machining operations. This procedure is applicable to aluminum, titanium, and steel, but usage is not limited to such applications. The process is applicable to the removal of light machining burrs but will not remove burrs that have been extruded by dull cutting tools. The process described responds to an automated brush deburring method that would lend itself to machine automation and robotic applications and be applicable to a wide range of part geometry variables.