Cor-ten

Pibuz · Post by **Pibuz** » Mon Nov 10, 2008 12:59 am

Hi guys..
Sorry to bother you..
It's been a while since i've been starting trying to achieve a realistic cor-ten material, but it seems like i'm ridiculously bad at that..

Somebody has some good textures and/or advices and/or ready materials so i can start messing around again? I'm in no hurry about that, that's only a sort of mania...
Thank you so much!

CTZn · Post by **CTZn** » Mon Nov 10, 2008 2:59 am

Given that image, i'd say a blend of two mats would do: rust and steel (quite matte of a steel tho), blended by a uniform noise map, where rust would cover 80% of the material at least.

the isl shader should not be too complicated too:

2 fbm's > remap colors to steppy fades (brown or gray, for rust or steel)
another hf noise func to mix'em. Theory rocks

Onfame · Post by **Onfame** » Mon Nov 10, 2008 4:01 am

i tried it with two textures blended with an shader, and added a little bumpmap, if you think itÂ´s good enough i can upload it to the material DB.

CTZn · Post by **CTZn** » Mon Nov 10, 2008 11:57 am

I'm finding the red too saturated for rust, as it is it looks like a nice eroded paint on metal material.

Here are some more references, googling:

http://lh3.ggpht.com/_nw5_VZfZvyo/R3vR7 ... EN+(3).JPG (copy string to adress bar) this one is pretty complex
http://lh3.ggpht.com/_SIAhCww5Syw/RvBQJ ... G_3587.JPG
http://lh5.ggpht.com/_nw5_VZfZvyo/R3z9d ... C+(24).JPG (copy string to adress bar)
http://finnvarberg.com/quadruplex.jpg
http://www.albrabv.nl/P3150144.JPG (more like galvanised iron)

Also I emulated the first step I mentioned with Maya, before I get the references above tho. The following textures are just good as cheap rust, just a proof of concept of what I said. Not bad for bump, but saturated indeed.

rust_2k_2.png
rust_2k.png

Is there anything close to what you where looking for, Pibuz ? I never heard about CorTen before...

Kram1032 · Post by **Kram1032** » Tue Nov 11, 2008 4:40 am

The second link (the first that doesn't need to be copied) doesn't work for me...

SmartDen · Post by **SmartDen** » Tue Nov 11, 2008 4:47 am

Onfame wrote:i tried it with two textures blended with an shader, and added a little bumpmap, if you think itÂ´s good enough i can upload it to the material DB.

Upload!

Onfame · Post by **Onfame** » Thu Nov 13, 2008 11:36 am

Uploaded it but for better realism combine it with a dirt map or something.

CTZn · Post by **CTZn** » Fri Nov 14, 2008 2:41 am

Onfame wrote:Uploaded it but for better realism combine it with a dirt map or something.

One can just use the two images I linked last in my previous post (rust_2kx).

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