Weathering Model Railroad Cars | Model Railroad Academy-- Dean Freytag provides a quick tutorial on how to weather a car. The segment begins with a sneak peek of Dean’s work area in the basement. He clearly spent a lot of time working on his model trains judging by the mess. Over the years, Dean has seen improvement in his own work. He dedicated many hours to the model railroading hobby. Sometimes he would stay up until 1:00 a.m. running trains.