how to create a best size fixed material using v-ray?.

[hotup]

My question is how to create a best size fixed material using v-ray?.
for example:
I created a material like the follow imagen, using a grid diffuse layer. I can preview the result in vray material editor, but i can't see any effect after rendering.
and i think it's a size configuration error, the detail is too small or large, but i tried to change the size parameter many times, and they didn't work.
so how is the solution?

Thanks a lot.

[hotup]

Re: how to create a best size fixed material using v-ray?.

sorry, it sais the upload floder is full, i can't post the imagen.
and this is the link.....