Here is a list of tools you might need:
3D Modeling Utilities that are used to create 3-dimensional figures.
Freeware/Opensource

Anim8or , Modeling, animation, and rendering. Very simple yet powerful tool, free, runs only on windows
Art Of Illusion , a full featured 3D modelling, rendering, and animation studio. It is written entirely in Java, and can run on almost any operating [...]