Hardware Splined Drill Bit (Video Tutorial) Autodesk Inventor 2012

I found the 2D drawing of this model from Mastering Autodesk Inventor book (Autodesk Inventor Practice Part Drawings) and converted it in a 3D model. To know more about the book visit the following link   http://bit.ly/sorjmlearningrp

To download the finished file visit the following link :-
http://www.mediafire.com/?rzzkyzu8mcxjd

For any further assistance on this topic, ask your questions at the following forum:-
http://forums.autodesk.com/t5/Autodesk-Inventor/bd-p/78