What is weathering?

Weathering is the process of making a scale train look used. It is a very simple method, but it requires a huge amount of care and detail. Using certain paints, one can make the wheels and other 'steel' parts look rusty or covered in mud or dust. There are lots of detailed tutorials all over the place, so I won't cover it. I am just here to tell you about the various methods of improving your scale train layout.