Abstract: A cast stone set is provided comprising at least four molded stones each having an irregular perimeter. The stones are configured to fit within a hypothetical defining border as defined. The stones can be used to form a patio stone landscape feature such as a patio or walkway, or to form a stepping path. In selected uses, the stones can be reordered from being positioned with the hypothetical defining border. Methods of use and manufacture are described.

Abstract: A concrete block mold division plate for front-face-up block molding. The division plate fits into a channel formed in each of the side walls of the mold. A plurality of fasteners secure the division plate within each channel and to the side walls of the mold. The division plate operates in conjunction with an optimized dry cast concrete mixture to provide acceptable control of the flatness and parallelism of the top and bottom surfaces of the blocks.

Abstract: The invention relates to a method of controlling the quality of blocks that are produced front face-up in a mold, and verifying the accuracy of the production of such blocks, to ensure that the blocks are manufactured with consistent quality and minimal block-to-block variability. Measurement locations are formed on the front faces of predetermined blocks. By measuring the distances between the measurement locations and the rear faces and comparing with a target distance, any variation provides an indication that the blocks are not being properly formed. The process variables, such as the alignment of the compression head and/or the pressure plates to the mold, can then be adjusted accordingly.