Symphony 3 is the grooving machine for cardboard. It is equipped with 90° or 120° V-shaped blades, in addition to U-shaped blades. It is able to groove the board in up to 4 different points without any dust. Symphony 3 can also kiss-cut the cardboard. The equipment is used for the production of both hard covers and boxes. In this case indeed, Symphony 3 can remove also the cut-off corners of the board.