Sanding machine MOLDING IMPROVED, comprising at least, a sanding (0) DOTADO at least HEADER, an abrasive belt (4, 4A), which follows a polygonal closed path SUPPORTED BY ROLLERS SWIVEL (5, 6; 5A, 6A) AND ITS ACTIVE STRETCH IS operatively fORCED TO ADAPT peripherally on MOLDING (1) A LIJAR, wherein said abrasive belt (4, 4A) EXTEND YOUR TRAVERSE PATH in a plane that is transverse to the direction of travel (10) DE said coving (1), WHILE THIS TAPE ABRASIVE (4, 4A) is integrally INSTALLED IN RESPECT OF A FRAME MOBILE THAT IS ANIMATED operatively reciprocates SANDING directed in said forward direction (10) TRIM ( 1), active leg of said grinding belt (4, 4A) arranged between the molding (1) A GRINDING AND CONTRAMOLDURA pisadora (2, 2A) actuated by a piston (3, 3A) perpendicular to AVANCE MOLDING ( 1).
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