Ben Rollason posted another 3D script for After Effects, 3D Bevel. 3D Bevel combines the best of the built-in Bevel Alpha effect and the Bevel and Emboss layer style, and adds reaction to an an After Effects 3D light.
Ben has 2 other 3D scripts, 3D Widgets and SkyDome, on AE Scripts, as well as a couple of tutorials on premultiplication and blending modes.