All of these frames were cut from a single piece of wood. They are similar, and logarithmically scaled. Their shape was designed to allow them to be combined to form a spiral tiling.
Material: laser-cut plywood
Like the A-series paper standard—in which all sheet sizes are similar, and each size is half the size of the next larger size— these block are all similar, and each block is half the size of the next larger block. In addition, each block fits exactly inside the larger (parent) block′s opening.