The free and open source 3D animation and modeling software Blender uses the proprietary BLEND format to save the complex models, animations and other graphics created with the application. Most 3D modeling programs, however, use the simpler and more common OBJ file format to save models. If you are using Blender for a large and complex animation job, you might need to import 3D models made by other artists into your Blender master project. You may find that converting the OBJ files into BLEND makes your resources easier to handle. Writer Bio
