Blender Export Tutorial
- select object you want to export
- enter edit mode by pressing "TAB"
- while in edit mode, press "p" and select "by material"
- exit edit mode - "TAB"
- if you have more than one object repeat steps 0, 1, 2, 3
- select everything you want to export except cameras, lights, etc.
- File -> Export ->Wavefront (.obj)
- In the export settings select "Triangulate faces" and "Selection only". You can also uncheck "Write normals" as it does not make any difference.
- Click "Export OBJ" button