I did two separate renders in Poser; one of Sabrina with the saber, the other with the saber-blade alone. I applied postprocessing filters (blur, noise, alpha glow, etc.) on the saber-blade video in Adobe Premiere, then composited the two clips together using an Additive Dissolve transition. Too much noise, though. It looks more like a flame effect than a proper lightsaber. I'll keep working on it. It's a good technique for detailed close-ups, but for distance shots I'll probably just use a blade-prop with transmaps, maximum Ambient values, and minimal postwork.