Inlay is a precise, labor intensive technique. Each component of a design is cut, fitted and soldered into its negative counterpart. With over 500 soldered joints some of the more elaborate pieces take weeks to construct. The colors in the pieces are achieved by inlaying different metals. Common ones such as gold, silver, copper, nickel silver, brass and bronze are combined with lesser known Japanese alloys (shakudo and shibuichi). The final hues are obtained by applying a patina.
This video describes the inlay process. For a larger view, click Full-Screen or Google Video.