"We have tried many other ways to get a valid .stl file for a SketchUp model, and your approach has been the most
succesful...be sure that we will go pro..."
-Mauro Herrero Cantos, Previa Arquitectos, S.L.P.
The CADspan Plugin for Google SketchUp allows generation of solid, 3D printable STL files directly from a Google SketchUp model.
The plugin provides several tools to ease the process of preparing a model for 3D printing:
-Resurfacer: Shrinkwrap a model into one continuous, solid mesh
-3D Print Visualization Style: A visual style that highlights problem areas in a model
-Layerize tool: Easily move all geometry within components and groups to a layer
-Smooth/Unsmooth: Toggle smoothing on a model's rounded geometry
-Free Version for personal use and small applications
-Get A Free 30 Day Trial CADspan Pro

Learn more:
Visit the AEC 3DP community for user-contributed blogs, discussion forums, tutorials and more on the CADspan plugin for Google SketchUp.

CADspan's 3D Print Thickness Calculator will help you determine what adjustmets need to be made to a model so that it's finer details will resolve on a 3D printer. Learn more about what this tool is used for.