A device for trimming at least one side edge of a bound printed product including a trimming table to receive the printed product and a press die arranged to press the printed product against the trimming table. The press die is operative to rise and fall with respect to the trimming table and the press die includes an elastic surface in a region approximately near the side edge of the print product. The elastic surface is operable to expand in a direction approximately transverse to the pressing direction. The device also includes a trimming knife positioned to trim the side edge. The trimming knife is operable to move between a starting position away from the trimming table and an ending position at the trimming table. The device also includes counter blade or a cutting bar mounted to limit a cutting stroke of the trimming knife.