I think George uses Rhino. Rhino makes large files by default because of the way it handles work flow. I make my stuff all by hand. Vertice by vertice. So I have more control over the file size. Detailed machines are almost always bigger files than organic meshes. You can create a pretty good illusion of detail on an organic model with large polys and use the texture map for the details. You can't do that so much with machinery. If I remeber right. I think the fins on my Godzilla models take up more file size than the whole body does. Because there's a lot of them. And there's no way to span the distances from vertice to vertice. Good looking machinery meshes are almost always big files. And you're right. It kinda sucks when you try to use them on a PC. Even on the high end machines. I'm hoping one day a company will develope a cheap hardware card that we can buy to utilize these larger meshes more easily. And take the work off of the CPU and RAM.