1. BlendUp exports clean geometries with quads and n-gons
Standard exporters like Collada create unorganized triangles sets with duplicated vertices, wrong normals and incorrect texture coordinates. Because of that, you need to spend hours cleaning your model.
BlendUp ensures that the exported Blender geometries match as much as possible to the source SketchUp geometries.
SketchUp faces are translated into quads and Blender n-gons. No vertex is duplicated and custom split normals are created. Front and back materials are defined for each polygon as applied in SketchUp.