㈜디자인메카 (2000 ~ 2007) (장치 및 기술개발, ISO인증, 품질관리, 지적재산권)
논문 " A development of an automated super surface finishing system for the 3D sculptured surface of mold and dies using ultrasonic micro burnishing technology " Proceeding of the 32nd ISR, 2001.
논문 " Nano structured surface modification of tool steel and its beneficial effects in mechanical properties " Journal of Mechanical Science and Technology, 2005.
