Vue does it the same way as bryce does, right? That is that the booleans are not "real" booleans, and the "missing" part is actually rendered transparent, as opposed to a "real" 3D boolean model which actually loses polygons in the process. At least that's how it was explained to me. Varian, dod you get the free Amapi 4 program from the magazine? Amapi does decent booleans, once you get past the retarded interface, that is. ;)