this is what it looks like when im running final gather and phongs

and its checked for render double sided in the attribute editor....

cgtalk thread for this discussion.......... (http://www.cgtalk.com/showthread.php?s=&threadid=72996)

in this thread they use the contour mental ray shaders for toon effects
i have a nurbs model...

adjust clipping

yip....just like i said,makes a very clean ring i might add also

just fer nurbs but maybe a blend shade or morph

revolve a linear 4point closed curve perhaps
rendering right now but im gonna try it soon:bgreen:

deleteing the history maybe?
when you bi-rail something it depends on those curves for temporary structual support,at least thats what ive found
it maybe something simple but history is what im...

there should be a script somewhere in maya to do this but i wouldnt mess with those,i might be wrong but anytime you mess with the core of maya things start actting funny...but you wont be laughing...

Can you use the "Split Poly" tool?