Radial bimetallic demo (VIDEO) Washington State University This video is under embargo. Please login to access this video. Caption In a demonstration of the new 3D-printing method, two welding heads work one right after the other on a circular layer to print two metals: an outer casing of cheaper “mild” steel and a corrosion-resistant, stainless-steel core inside. Since the metals shrink at different rates as they cool, internal pressure is created – essentially clamping the metals together. Tests on the result showed greater strength than either stainless steel or mild steel has on their own. Credit Washington State University Usage Restrictions For use only with stories associated with this press release License Original 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.