Chandrasekar Sinuous (IMAGE) Purdue University Caption This image, at left, shows a previously unknown type of metal deformation -- sinuous flow -- in which metal is deformed into folds while it is being cut. New research findings, in graph at right, reveal the cutting force can be reduced 50 percent simply by painting metal with a standard marking ink, suggesting that not only can energy consumption be reduced by 50 percent but also that machining metals can be achieved faster and more efficiently, and with improved surface quality. Credit (Purdue University image/ Ho Yeung and Koushik Viswanathan) 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.