How to render dust filter material?

[nonamer]

Hi everyone,
i'm wondering how to render a proper dust filter. For a project I have to render different shapes of those filters. They are made from PE foam and are avaiable in different porosities measured in PPI (pores per inch). I attached two pictures of filters with different porosities. Does anybody have a clue how to set up the materials for a realistic rendering in Keyshot?

Thank you in advance!

[Artur]

Same problem here.

Looking for new ideas.
Currently I am using bump and diffuse mapping, but the texture seems flat and very fake.

[TpwUK]

These kind of materials are notoriously difficult for any render engine. The only real satisfactory result will only be achieved via displacement.

Martin

[Esben Oxholm]

The big problems with materials like these is that they are actual three-dimensional structures. If you take a closer look the first image you see a structure with overlapping and interconnecting geometry, which is something that (as far as I know) can't be done with a material. 

With that said, I guess that the dense one of the foams you show can be faked in KeyShot with a normal- or bump-map if you are not going to do any close-ups of the material.

[Finema]

Hi
Perhaps a starting point with a seamless texture in Metal Material + Bump, Roughness and Opacity.
it's just a test.....

[Finema]

here an other view

[Artur]

Good solution.
But the foam material I am making doesnt handle close ups very well.

Any advice on this?

[TpwUK]

@Finema - Great material that would be more than acceptable for thin dust filters such as those used in PC cases.

@Arthur - If you post me your part that is foam i will add displacement to it and post it you back

Martin

[nonamer]

Hi
Perhaps a starting point with a seamless texture in Metal Material + Bump, Roughness and Opacity.
it's just a test.....

What kind of texture are you using for the mesh? Is it an opacity texture? Can you upload that texture, so we can try using it. Thank you.

[Finema]

here in attachment >

[Artur]

Nice one.
But the pattern is predictable.
The foam is a more organic and random structure.

[Finema]

In this case, you can open the texture in Photoshop and randomize it

[Artur]

Yes, Photoshop is a solution for the predictable pattern problem. But the seamless integration would then fail...

[Finema]

you can recreate the seamless in photoshop with Offset menu.

[Finema]

a good result here >

https://www.keyshot.com/forum/index.php?topic=6371.0