Aircraft Surfacing 101

No painted surface is perfectly colored. There is always going to be slight color variations. Add another layer called Grunge. Use a dark grey (60,60,60) and a big soft brush (mine 75 pts) to airbrush on lines. Nowhere specific just try to keep then close to horizontal and vertical. Image #9 Blur this layer alot, Around the 45 mark. Image #10. The only thing left is to set the opacity of each of the layers.

  • Grunge 20%
  • Drips 20%
  • Panels 30%

These are just starting points. Adjust them as you see fit. Test render and tweak to your hearts content.

Specular Maps.
Spec maps can be your best friend or your worst enemy. Add a layer named... Base =) and fill it with an appropriate grey. Start at 129,129,129. You can always change it later on if its to much or to little. Thats the beauty of working in layers. Add a layer on top and call it green. I'm going to make the diffrent color paints on the plane slightly diffrent in reguards to specular. Load your green selection. Fill it with 115,115,115 to make it a little less specular. Add another layer called Belly, Noticing a pattern here. Load your belly selection and fill it with 142,142,142 to make it a little bit MORE specular. Image #11 shows the base spec done with the green selected. Now, because we're simulating dirt buildup on the diffuse layer it stands to reason that where the dirt is wouldn't be as shiny and new either. Make a copy of the Drips and Panels layers in the diffuse folder. Drag the copies down into the spec folder so they are at the top. You may have to play with the opacity a bit but for now just let them be. Image #12 Add another layer at the top. Call it noise and fill it with 129,129,129. Use the noise filter and add alot Monocrome, Gaussian. Mine was 161. Your looking for a nice mix of white and black.