water in the cup... ?

[teknal]

Here's mine! I know it's a bit late but when I read this last night I couldn't resist. While playing around with it I also noticed a difference in the refracted image. I don't think the rays need to be so high but I wanted to get the full effect without having to test it by incrementing one ray at a time.

Does anyone know why those fuzzy grey areas appear (they are within the "water" and I'm pretty sure that they are the white squares)? I can't figure it out.

Also, I notice that there is a fine grey line between my water and cup. I took a copy of my cup and removed the outer portion of the spline so the inner portion was exactly the same as the cup (inside a lathe nurb). Is there a tutorial for making liquids in a cup somewhere?

Thanks,
-Tek