PJF, the new "Follow Me" tool is awesome. It's a new way to extrude/ lathe shapes. I used it on the rail and the little bended "things" between the inner and outer part of the platform. Also the new features like Ruby scripting and true booleaning come very, very handy. I'm really excited, because with the new tools I can do things in seconds which took me half an hour to do with SU 3. Have a look at the "What's new" tutorial videos: http://www.sketchup.com/training_windows.php J.