Autodesk® started with their free 3D modelling application 123D™ a small but fun challenge for Halloween. 123D™ is a free solid modelling software program with which you can design precise and makeable objects using smart tools that let you start with simple shapes and then edit and then tweak them into more complex shapes. For people which are interested to try and do some modelling in this application, 123D™ gave some pumpkin starter models and also a short video which will help you with carving your own pumpkin.
Everyone who posts an original image of their 123D™carved pumpkin model to the 123D™Gallery before Oct 31, will get a free 123D™Tshirt. To download the free starter model follow the link at the bottom.
Source and full article: Autodesk® 123D™