I can't believe it's been 9 years since reading a thread and saying "I want to mess around with this technique someday"...  But I guess it really has been. 

So I'm curious, does/will EZMat have any options for rust or grime as seen in this ancient, but still inspiring, thread?:

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2177495&page=1

Nine years, and still on my to-do list...  :sad: