Home Page › Forums › Modeling the Missouri Pacific, Texas & Pacific, etc › HO Scale › Building a Mopac GP-12 1065 (ex M-I RS-3) › Reply To: Building a Mopac GP-12 1065 (ex M-I RS-3)
Weathering
I use a photograph of a piece of equipment to keep my weathering in check. It’s too easy to over do it. Here’s a photo from Jim Boyd’s book of how I’d like the HO GP-12 to turn out.
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Like painting an oil painting I start with an under painting to get the base colors down. Looking at Jim’s photo there was lots of light gray/brown particularly on the walkways. There’s also some of this same color, lightened with white around the fans. The carbody shows lots of oil leakage to that was replicated with black oil paint. The brown on top of the carbody is Brown Panpastels. The advantage to using oils is they are easily to remove if you need to start over. Panpastels and military dry pigments are almost impossible to remove and weathering with an airbrush is as well. The oils take a day or two to dry and must be sealed with a flat coat. Everything has its advantages and disadvantages but I’m sold on using the water based oils.
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Once the water based oils dry I’ll give the carbody a light coat of Dullcote to seal the oils and then add more Panpastels and paint in layers.
