Does anyone know how to make a tarnished stainless steel texture?

Hi All,

Does anyone know how I can make a slightly tarnished/worn stainless steel texture?

I’ve attached the 3dm file for the ring I’ve designed:

Ring with lighting.3dm (1.3 MB)

But can’t seem to get the surface of the actual ring to match what I’ve made, and I’ve attached the jpeg for that:

…Is this even possible to do in Rhino?

Also, the inner part of the ring is ruffled leather and I can’t seem to get that effect, once raytraced, to portray properly when I viewcapturetofile as a PNG or jpeg:

It doesn’t show the full shadows of the ruffled leather.

I can get the the leather to show how it’s ruffled, moreso, and a better colour (after lightening the emission colour in the material) of the leather, but only when rendered:

But it still doesn’t show the shadows and ruffled effect as it could/should.

Does anyone know how I could achieve this, so the leather is light and has shadows that show the ruffles properly and the slightly tarnished stainless steel in raytraced mode?

Let me know is any of this doesn’t make sense…

Any help would be greatly appreciated on both points.

Ashley

anistropic effects like that require not only a color map, but a bump map as well to create the scratches that make up the brushing effect.

your leather will require a displacement map to make the ruffling, a color map for the actual color of the leather and a bump map for the leather pebbling itself.

I’d take a peek at adobe’s substance collection for materials you can drag and drop, (mat require a subscription)

or perhaps there is something on freepbr.com that you can use.
https://freepbr.com/

or maybe something like this (purchase)
https://www.a23d.co/texture/brushedmetalsurface-0303416
https://www.a23d.co/texture/leathersurface-0217305

google “brushed stainless PBR material” and “leather PBR material” and you will get lots of options.

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something like this is pretty easy with a substance material as the metal, the v8 jewelry environment (lowered the saturation and intensity) and puffed up your leather surfaces a bit simply by scaling the inner surface in a bit

planar mapped the ring surfaces, except the bottom of the circular element, I spherically mapped that to get the brushing to lay properly.

Ring with lighting_kfix.3dm (2.4 MB)

Hi Kyle,

First of all, thank you for all of the info you responded with - I really appreciate it.

The image you responded with looks amazing. Do you know how I could recreate that with Rhino 7?

I’ve looked at the satin stainless steel material I currently assign to the ring and it doesn’t allow me to add a bump map to it. Is there a channel or something I’m missing?

As I don’t have Rhino 8, I can’t open the file.

I don’t understand this phrase ‘with a substance material as the metal’ - can you explain a bit more please?

I’m fairly new to Rhino, but I want to get that effect you’ve posted, just don’t know where to start.

Again, thank you - I really appreciate your help.

Ashley

yep, nothing fancy there- the only thing I used was a material from substance source- you may have to join to get that.

change the satin steel from a metal material to a physically based material (simply change the material type in the drop down of the material properties)

Substance by adobe is a material system that you can use to import materials into rhino using the sbsar format
see link- Substance 3D Assets

here is the file in v7 - or simply grab a free trial of v8… lots of great new stuff there…
Ring with lighting_kfix.3dm (2.4 MB)

also check out this video-

If you wanted to avoid large texture sizes, you can usually emulate brushed metal to some extent using some form of highly stretched version of a noise texture, and induce the dirt using a larger scale noise I think, in the specularity of the physically based material (fBm).

Here’s a go using standard Rhino textures. fBm is used and the aspect changed to represent brushed effects and a displacement.

This is done in Rhino 8, but you are more than welcome to the Rhino 7 file if you want it. No idea how it will convert, as I lost access to Rhino 7 when I upgraded.

The only post-effect is a very light abberation effect.

Thank you for sending over the file, Kyle. And, for clarifying the instructions in Rhino 7.

If I were to only want to add some of the main patches/tarnishes, like in the blue circled bits from your image:

How would I do this?

So essentially, the satin stainless steel material/texture as is with the blue circled bits from the image attached…is this possible?

I played around with the file you sent over but I can’t seem to figure it out.

Btw, the scaling you’ve done with the leather is so good, thank you.

Ashley

Thank you David! this is amazing. I can’t use it for this project but I can for the next - so, thank you!

Ashley

that’s the “dirt” setting in the substance sbsar settings

Sure. I attach the file with some minor adjustments incase you want any elements from that as well. It is exported in the Rhino 7 format. I have attemted a tarnish effect, again using scaled noise in a second mapping channel.

You can find a direct drop-in replacement for the leather material, which should be easy to find open-source. However, I have changed the displacement for a better ruckle effect.

Best of luck!

Ring with lighting R7.3dm (5.8 MB)

So, stainless for me is still a WIP. It needs a fine bump map, BUT, the bump map isn’t going to be high enough resolution to really do the job, alone, so the color map also needs to be good.