Trimmer 4A is a CNC corner cleaning machine for PVC frames with 4 interpolated axes and automatic cycle which, when suitably configured, is able to recognize the size of the profile to be cleaned. It has a 275 mm diameter knife which allows, with different work programs, cleaning the outer corner on various profiles. Trimmer 4A also has top and bottom units with knife for cleaning the welding beads plus top and bottom units with knives for cleaning the inner corners. Machining of the inner and outer corners can be completed with the top and bottom drilling/milling units for cleaning the corners or gasket grooves. The machining units can be programmed independently from each other via a CNC PC which controls programming of the profiles and machine operation (manual or automatic mode). When the machine is suitably configured with the necessary tools, it can handle all types of standard profiles including acrylic and coated profiles. Trimmer 4A is available in three models: a manual version, a semiautomatic version (with turntable) and an automatic version (with turntable and outfeed table).