Make second life sculpties. SketchUp - a step by step guide to learning and using Sketchup. Sketchlife - build in SketchUp, upload to Second Life. What is Sketchlife?
Sketchlife is a system which allows you to build for Second Life using SketchUp. Most 3D modelling tools use meshes (vertices connected by edges which define faces), whereas Second Life has adopted solids, referred to as primitives, to be their indivisible building blocks. This guarantees that there won't be any stray polygons flying around, but it also prevents mesh models from being imported automatically.
Blog Archive » Simple SketchUp to Second Life Exporter. Andrew Reynolds over at eightbar (the blog of a few IBM researchers at the company’s Hursley installation) writes that he’s put together a crude version of an app that 3pointD has been looking for since earlier this summer: a tool to export shapes from Google’s cool free 3D modeling app SketchUp and import them to the virtual world of Second Life.
Andrew’s plug-in for SketchUp writes basic model information to a text file, from which it can be imported to Second Life in notecard form (presumably by manually cutting and pasting). After that, an in-world object parses the notecard and re-generates the model in Second Life. It seems to only handle very simple objects, but it’s a good start.