Porous cross-linked polymers are useful in many applications, such as separation media, chromatography supports, biosensors, and scaffolds for cell culture. The properties of such polymers depend not only on the bulk structure but also on the surface morphology. On page 1022 of this issue, Kuo-Chung Cheng and colleagues introduce a general methodology to prepare porous polymers with similar bulk morphologies but different surface structures. Working with epoxy, they use chemically induced phase separation under various contacting films such as glass slides or different plastic films, which are pressed onto the casting solution during the cure. They then go on to study the effects of the different contacting films and the reactive composition on the surface and bulk morphologies of the epoxy networks.