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❸ Applying a paint wash. I started the weathering with
the cab roof. I mixed up a weathering wash by adding 2
teaspoons of black India ink to a pint of 70 percent isopropyl
alcohol. Using a wide, flat, soft-bristled brush, I lightly applied
the wash over the roof using horizontal strokes.❹ Getting dusty. To capture the prototype’s dusty, flat black
surface, I airbrushed on a wash of 50 percent Testor’s Dullcote,
50 percent Testor’s Brush Cleaner, and a few drops of Model
Master U.S. Army Helo Drab (no. FS34031). After that dried,
I applied a layer of Bragdon Enterprises’ Soot Black
weathering powder and sealed it with Dullcote.❺ Get the lead on. I gently ran a no. 2 pencil across the top of the molded-on pipes to highlight them. It’s easy to overdo this,
so I used the lightest touch I could with the pencil. You just want the hint of highlights.❻ Better coal. To add texture, I applied a realistic coal load to the tender, using Arizona Rock & Mineral N scale coal dust.