Waybe is a Google SketchUp plug-in which helps you bring your SketchUp models into the real world.
Waybe can take a simple or complex SketchUp models, and unfold it into a printer-friendly format, maintaining all of the model's colors and materials. It's not exactly a one-click operation; for anything complex you need to divide your model into groups which get unfolded one at a time.
Waybe printouts match the scale used in Sketchup. If your model is printing too large or too small, please scale it up or down inside of sketchup to your desired dimensions. You may, alternatively, use a printer with a larger paper size to accommodate the large model but be sure to specify the paper size in ‘waybe setup’.