I bought at a very cheap price, or was given, various pieces of brass tracks which I had used to put on the floor and view different layout scenerios to see what actually fit in a given space. I changed my designs based on how the track fit, including sizes of layouts. (All my loop areas will be 60" wide, all my shelf modules will be 30" wide). I'm now in a position to use only NS, but if I ever get to building a hump yard, the downward track might be brass to utilize the 30 switches I have, and I won't worry about cutting them up and soldering them together to fit more track in less space because they are cheap, and so what if I wreck them all trying to make something work?