Math Node

[CarlG]

You do math operations with it, on a single channel. Not sure I understand the question.
Have a look through forum posts or download materials.
This one should keep you busy for a while:

Yet Another Thread about Cycles Materials

Hi all. In this thread I’m going to show some cycles materials that I think you could find interesting. I hope you like them, and if you can improve them you can show how to do it here: EDIT: All materials posted here are procedural. I don’t use images for textures.