When cuts that aren't flat are desired the model can be manually divided into groups representing each side of the cuts. This script helps putting the cut geometry on its own layer so it can be hidden when the model as a whole is shown.
RpImageFilters is a free Plugin for SketchUp to apply filters to improve SketchUp images.
For laying out, editing and manipulating 3D components. and to create non-photorealistic renderings and images from SketchUp models.
Suite of tools to aid working with V-Ray for SketchUp.