Yeah, you may be right. When I tried to add the crack in, it was applying it to each polygon in the glass. I am going to UV map and see what happens. Maybe I can get it to work that way.

If not, I will give up on the idea, unless someone with more material room experience can point the way. I don't want to model the cracks in.

If I had a nickle for ever time a woman told me to get lost, I could buy Manhattan.