Inspired by the 3D graphic work within the new book 'Leonardo's machines' by Mario Taddei, Edoardo Zanon, and Domenico Laurenza (Simply amazing)
http://www.tomah.com/delliott/leonardo.gif
http://www.tomah.com/delliott/leonardo2.gif
I am requesting a tutorial or instruction of how to develop a ttoothed gear within AC3D. Thanks in advance.