Study and design of interlocking blocks by surface finishing sideways to add value. Objective to design a model of skin by interlocking blocks to add value. And to design a more decorative materials steel surface by interlocking blocks.2 pattern is a interlocking blocks and series iron increase decorative materials 1 aspect and 2 aspects. The interlocking blocks with each side surface model was 3 characters. Add decorative materials by using gravel wash, skinWashed sand and stone flake clear using machine press hydraulic Form the interlocking blocks used surface side is the size of 12.5x25x10 cm and the thickness of the skin ตกแต่งด้าน each 1.5 cm.