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how to achieve a bronze shader, optionally with some dirt?

Here is my Mesh:

enter image description here

And here is a reference image showing how it should look:

enter image description here

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    $\begingroup$ Glebe Alexandrov has a video on how to make a grungy metal material (warning: he moves fast!). You can procedurally tweak the colors of whatever texture you use with an rgb curves node to get the bronze color. $\endgroup$ – PGmath Oct 29 '14 at 22:58
  • $\begingroup$ its nearly imposibble to follow that tutorial since it was made to animate people to buy the 3d magazine. $\endgroup$ – TheCycleOfBlend Oct 30 '14 at 12:54
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    $\begingroup$ That's not really the purpose of the tutorial, that's just Gleb's style, all his videos are like that. You have to do a lot of pausing and rewinding. I am working on a bronze of my own based on Gleb's metal, I will post it if I get it done. $\endgroup$ – PGmath Oct 30 '14 at 13:41
  • $\begingroup$ No dont get me wrong but its like here look textures overe here sliders over here and here i have some texture and groups and nodes and i dont know what and then I find in Description" Written tutorial with all steps covered in detail can be found in 3dWorld magazine. " seems to me like if you want it in detail buy this magazine i would be glad to see youre approach to the answer. $\endgroup$ – TheCycleOfBlend Oct 30 '14 at 13:55
  • $\begingroup$ And did you got something ? $\endgroup$ – TheCycleOfBlend Nov 1 '14 at 11:09
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Here's what I came up with using procedural textures:

enter image description here

I would use dirty vertex colors in 3D view > header > Paint while in Vertex paint mode to add some dirt to the corners:

enter image description here

You can then use this in your node setup via an Attribute node, with the name set to the name of the vertex color layer (Col by default):

enter image description here

You could more than likely get a better result more easily by using image textures.

I'd also recommend this tutorial, which has some great examples (and a free image texture).

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  • $\begingroup$ hmm i think i get into texturing i didnt see one statisfying result (and i tried my self already.) $\endgroup$ – TheCycleOfBlend Oct 30 '14 at 12:12
  • $\begingroup$ Little offtopic: thumbs up for Suzanne with crista :) $\endgroup$ – Daniil Romanov Aug 16 '15 at 9:17
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Here is my version of Gleb Alexandrov's grungy metal. I changed the color to a bronze using a couple of RGB curves and Bright/Contrast nodes and added some dirt using dirty vertex. The rust is not technically accurate since bronze does not rust but I threw it in anyhow so you can see how it is done. You can always bypass the rust by plugging the base metal shader right into the scratches mix shader node. It looks great though without the bronze coloring on the base metal.

Here is the full material:

enter image description here

Here is just the base metal:

enter image description here

Full thing without rust:

enter image description here

Here is the node setup:

enter image description here

And finally the blend file.

Both the base metal and the rust textures are free ones from cgtextures.com, the scratch map is homemade.

If you don't want it to look that grungy you can mix the base metal with a bronze color using a mix RGB node and increase the left value of the color ramp coming out of the fresnel node to get more gloss.

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  • $\begingroup$ The blend file is missing and the node images are too small? PGMath help! $\endgroup$ – hawkenfox Jan 25 '16 at 12:49
  • $\begingroup$ @hawkenfox I added an enlarged node tree image link. I'll have to see if I can dig up the .blend. I think I still have it sitting around somewhere. $\endgroup$ – PGmath Jan 25 '16 at 13:35
  • $\begingroup$ thanks for your kind attention. The enlarge node tree didn't help much tho , the node group is too big and it's really hard to see on my screen. $\endgroup$ – hawkenfox Jan 25 '16 at 22:20
  • $\begingroup$ The link is broken final blend file. plz share the file. Thanks $\endgroup$ – atek Apr 20 '19 at 7:00
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Okay After some Investigation and trying stuff i found this here http://blenderartists.org/forum/showthread.php?241389-Dirt-procedure Here is the Node Setup for it too has Dirty Vertex Colors.

enter image description here

the result can be seen here. Of Course someone could Tweek the Colors / Mix Values for another Result look the thread up.

enter image description here

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  • $\begingroup$ best looking and simplest shader here. $\endgroup$ – David Oct 30 '14 at 16:42
  • $\begingroup$ where is youre approach then i want to see that Bronze Material of yours ;) by the way bronze has a very wide meaining in terms of corlors if you noticed that was my own question and you acn alterate the colors in the node setup. $\endgroup$ – TheCycleOfBlend Nov 6 '14 at 22:01
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If you download this pack and append in the Brass Old one, you can adjust its colors to get what you are looking for. Then hook a grunge map into the Roughness value, or use a noise texture like this:

enter image description here

This gives an output of: enter image description here

By playing with the Contrast and Multiply Values you can get a pretty nice result.You can mix together more complex textures to get a look more like your image.

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