There’s an enormous range of effects we can achieve with oil paints. Rust, fading, dust, grime, rain marks, smoke… You name it. I’m pretty sure you can weather a whole model only using these paints.
In this tutorial I’d like to show you a way to paint rust effects with only 3 oil colours: orange, dark red and brown. You’ll also need white spirit or another thinner for blending.
This is a part of my Toyota technical project. Check out the link for the complete SBS:
Create some paint chips using hairspray technique or any other method you like.
The chips are an important effect by themselves but here they’re going to give us some additional texture as well.
Start with the lightest orangey shade. Dilute the paint with white spirit and try to trace all the chips by painting over them. You can also create some irregular stains, especially at the bottom of the part.
I used Cadmium Orange from the Talens van Gogh palette.
Blend the spots with a brush moisten in white spirit. Make sure you clean the brush from time to time and don’t use too much thinner for blending.
Then create some speckles with the same orange colour.
The little dots will recreate fresh rust spots. But they will also help in blending the oil colour with the base.
Notice I also did some streaks by just dragging down fresh paint.
The speckling is a powerful technique by itself. By using different shades you can achieve a complex effect like on the rusty metal plate below. Check out my ZSU-57-2 project for more details.
Add another colour to the palette, sort of rusty dark red. Mix it with the orange in 1:1 ratio. Then repeat the steps above but this time cover a smaller area. Each spot of the darker paint should be surrounded by the previous orange colour.
I used Light Oxide Red as the second paint.
Repeat the sequence once again but this time mix the red colour with dark brown oil paint. And again, narrow down the area where you apply the paint.
I used Raw Umber as the darkest colour.
Attach the part to your model and use any other technique to make sure it blends nicely. And it’s done!
This is just a small sample of rust effects you can achieve with oil paints so don’t be afraid to experiment.