The University of Cambridge Department of Engineering operates a very informative site on material selection and processing. Its purpose is "to aid good practice in the selection of materials for product design." Of the many features offered on the site, a particularly valuable section is the Process Encyclopedia. This has a long list of manufacturing processes with detailed descriptions and illustrations. Extensive information about common materials and properties are also given. Interactive material selection charts show the relationship between various physical parameters. Product analysis case studies, tutorials, and many more items make this a very comprehensive resource.