About the Author: Rauwendaal

Chris Rauwendaal has worked in extrusion for more than 39 years.

Chris Rauwendaal has worked in extrusion for more than 39 years. He heads his own engineering firm in Auburn, Calif., which provides custom screws and dies, training, and process troubleshooting services. Contact: (530) 269-1082; email: chris@rauwendaal.com; website: www.rauwendaal.com.