A rotating cylinder cement screeding system having a drive assembly and handle at one end for powering and controlling the screeding system. For increasing the possibilities for changing the orientation of the flat articles during such conveyance, the grippers are attached to the conveying elements by asymmetrically-projecting gripper arms and the grippers are designed to be rotated through 360 around the gripper arm axis. The capacitor body may be further perforated to form second holes extending from a second opposed surface of the capacitor body.