brush metal vray material?

[Gans022]

Hi i can help u with this
Plz mail me ur mail add i will email this to u

bye

[mahmoudcg]

would you reply here plz and share your approach
whats the discussion for then

[andrewjohn81]

I totally agree. Please don't us PM, or email in this way. This is the kind of discussion that needs to be on the forum.

PMs and Emails are more for personal things, like sharing information you don't want everyone to know.

If everyone can benefit from something then share it.


We use brushed metal every day here and I'm always looking for a better way to deal with it.
We use anistropy, a grain in the diffuse channel, glossy reflections (although it would be nice to choose how glossy in each direction like you can in final render), use an hdri (we made it here with a garden gazing ball), and I generally put the grain in the reflection channel too and tweak it based on how reflective I want it.
If it's a coated material I stick that into a shellac and add a crisp reflection as well.
BTW, this takes a stupid long time to render.

Also, you'll nearly ALWAYS need to do some "painting with light" on stainless materials to get the look you want. We usually do 2-3 vray lights placed to get the highlights we need. If the stainless is in a full scene, meaning an environment build out of geometry with actual materials applied, then the vray lights aren't always needed.

Hope that helps someone.

If someone has some bettery thoughts then PLEASE share them. So far, that has given us the most consistant result.

[soulburn3d]

I recently threw some idea together on the subject in this tutorial:

http://www.neilblevins.com/cg_education/brushed_metal/brushed_metal.htm

Although this uses brazil as an example renderer. Some of the theory will carry over though.

- Neil

[Bogged]

If the stainless is in a full scene, meaning an environment build out of geometry with actual materials applied, then the vray lights aren't always needed.

Well, they sort of are, but that's only because they're probably somewhere else in your scene haha.

soulburn3d: Wow I really liked that tutorial. Most tuts just show the process in one dimension, but I liked it how you approached the task from multiple angles. Good work. I'm gonna try it when I get home today ;).

Cheers
Gerd

[andrewjohn81]

We've used that method on some smaller items like knobs and handles that needed a close-up.

The downside is that it takes an Huge amount of time to render since so many samples are needed.

I wish microfacets were easier to create/simulate without such a huge blow to render times.

[soulburn3d]

Wow I really liked that tutorial. Most tuts just show the process in one dimension, but I liked it how you approached the task from multiple angles. Good work. I'm gonna try it when I get home today ;).

Thanks, glad you found it useful. In production, there's almost never a one solution fits all situation, you attack the problem from a different angle depending on what the requirements are of the shot. So I always try to include a bunch of different methods.

- Neil

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