Robert Anderson at Model Trains and Model Railroading Help - 5 days ago
Jamie, a keen member of the online model train club sent in this tip: "I use those little tubes available for garden sprinkler systems as sewerage and drainage pipes. I cut them into short pipes lengths of 1", 1 1/2" or even up to 2". I then paint them a steel or concrete color. For culverts, I bought a pack of those bendy drinking straws the kids love to use. Because they bend they work well as corrugated parts on some culverts. Obviously I paint those too."