The manufacturing of the exact geometry of the worm gear toothing is a complicated issue since the flank surface of the worm gear tooth is a curved surface explicitly indefinable [5]. The accurate geometry of the toothing can be obtained by running the manufacturing simulation application written in Auto Lisp. However, the obtained 3D model shows a flank surface of the tooth which consists of several small surfaces irregularly positioned and sized. To facilitate the FEM analysis using this 3D model is necessary to clean the obtained tooth groove and the flank surfaces. This work deals with the machining of the accurate 3D tooth profile and the reshaping of the 3D model of the worm gear without impacting the accuracy of the obtained geometry