This add-in gives Inventor the ability to import polygon data from OBJ files.
Editor: OBJ Import for Inventor is a Wavefront OBJ file import add-in for Inventor. This add-in gives Inventor the ability to import polygon data from OBJ files.

OBJ Import for Inventor reads polygon mesh data stored in OBJ files and imports it into Inventor. A polygon mesh in an OBJ file is comprised of a set of triangular and/or Quad faces. OBJ Import for Inventor creates trimmed planar surfaces for each TRIANGLE/quad and knits them together to Create a body. If the polygon mesh is closed (i.e. it does not contain boundary edges) then OBJ Import for Inventor will create a closed body feature, otherwise an open surface will be created.

OBJ Import for Inventor is very easy to use. Once installed, it automatically loads itself into Inventor and adds a new submenu called OBJImport to the Inventor menu. you can free download OBJ Import for Inventor 1.0 now.