Okay, I read in the Mortier book that you can group two infinite planes to create a boolean. I think this would be, for example, to have a beach and an ocean in the same scene. So, this is the steps I took to get no results whatsoever. I created a ground plane and gave it sandy beach material. I created a water plane and gave it sea foam material. I moved the water plane back on the z axis to where I wanted it to be, I assigned it a negative boolean and left transfer materials to thingy on. I made the ground plane Positive boolean. I then selected all and grouped them together. well, nothing. both planes disappeared in the preview window. How can I make this happen properly? -Darth "Hating the Mortier Book" Logice