Hello, I'm a total newbie in Gmax, and I'm trying to create a hangar for FS2004. Now I want to be able to park planes inside this hangar, so it must be hollow inside, and it must have 2 doors (I want to add animated doors later, for now I'm happy with just 2 holes ).. I did some leveldesign in the past (in QRadiant) but that was totally different. At this moment, I have 5 boxes (walls and roof), together they represent a big hollow box, see attachment 1 how I did this, I don't know if this is the right way. Now I want to create two holes in the 'front box' (see attachment 2) where I want to add doors later on. But I have no idea how to do this. I tried already something with vertexes and searched the help of Gmax but no clue yet. In QRadiant, there was a 'CSG Subtract' function which I used, but I don't know a equivalent in Gmax. I know this is really a newbie question, so a link to a good Gmax tutorial would also be really helpful! Thanks in advance!