creating a dirty appearance

[ighosti]

How exactly could you go about doing this?
I'm sure there has to be more than one way...


For example, Im trying to create an appearance on my model very similar to this picture...

http://sneakerboxx.files.wordpress.com/2008/05/ironman.jpg

[lehko]

Hi,

One way to make dirty material, is to mix different bitmap in the render tree, using mixer node or layers.
you can also use multiple UV's coordinates.
Here's a quick and simple example :
http://i58.servimg.com/u/f58/12/58/99/33/dirty_12.jpg

for the bumpmap, I just bake an albedo map with the render map, and adjusting it in a 2d software.
:smile:

ps : sorry if my English isn't correcthttp://www.servimg.com/image_preview.php?i=21&u=12589933