Rusting a Tin Roof

[Anonymous]

I am currently modeling and weathering a barn.

The kit came with thin metal for the roof. I am looking for a realistic way to add weathering and rust to this roof. The kit suggesting laying on wet paper towels and put in the oven at 150 degrees. I have tried this for several hours with unsatifactory results (I have added water several times keeping the towels saturated).

There must be a good paint or wa***o use on the metal.

Also, what is the best way to glue the metal roof to the cardboard underlay?

Answers much appreciated.

[tomwatkins]

Polly Scale acrylic paint can be thinned with windshield washer fluid ( the blue stuff is what I use) to make a wash which works well. Also pastel chalks or Bragdon Enterprises weathering powders will work. The Bragdon powders are mixed with a dry adhesive so they stick much better than regular pastels.

Have Fun,
Tom Watkins

[Jetrock]

One technique to try: Apply a light coating of olive oil, and hold it over a flame. Scorch the olive oil (you'll want to hold the roof material with a hemostat or something) with the flame and wipe off the soot--you'll have reddish-black oxidation all over the roof.