Originally posted by t1ck135 I think the dust could be patchier though, especially if you look at the reference shot and the last one you did - the dust seems more dense on the higher edges or each part of the model. [/B] Ive gone back and made the dust a bit pachier. It's really hard to make it look realistick:headbang: The reason it gets denser on the higher bits is because the dust is done with a ramp shader. I dont know how to fix the problem though Heres anatempt