A cutting device is provided for cutting a conveyed plate-shaped body. The cutting device includes a rotary cutter and a lifting device. The rotary cutter includes a lower unit. The lower unit is disposed below the plate-shaped body, and includes a roll and a lower blade attached to the roll. The lifting device is disposed on the lower unit, and lifts up the plate-shaped body.

An excess screen mesh trimmer to trim excess mesh from flexible screen frames to which the mesh is at least partially fused, including a trimmer assembly including at least a first rotating blade having a sharpened outer perimeter edge and a screen frame supporting assembly that supports a flexible screen frame proximate the trimmer assembly and proximate the at least first rotating blade perimeter edge in a parallel orientation to a portion of the screen frame A supporting frame supports the trimmer assembly and the screen supporting frame. Also, a method of trimming excess mesh from flexible screen frames placing the flexible screen frame in contact with a portion of an infeed fence and advancing the flexible screen frame in a direction parallel to the portion of the infeed fence and severing the excess screen mesh from the flexible screen frame proximate the flexible screen frame.