His and Her Owls (MakerWare-friendly!)

thingiverse

The original His and Her Owls model has inverted normals on the female owl, causing issues with MakerWare's rendering. To fix this problem, you can use Blender to flip the normals direction for all faces of the right owl. After re-exporting the STL file, it should load and print successfully in MakerWare without any issues. Be cautious when creating models in Blender to ensure your normals are facing the correct direction; this can be checked by switching to edit mode and adjusting the "Normals->Show Face" settings in the properties menu. This will prevent future problems with rendering and printing.