3-D Printing Tweezers Model (IMAGE) University of Southern California Caption A computer model of a pair of tweezers shows the distribution of materials and degrees of hardness in the object to be 3-D printed in Dr. Yong Chen's lab at USC Viterbi. Credit USC Viterbi Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.