KeyShot Forum

Technical discussions => Materials => Topic started by: nonamer on June 13, 2016, 07:03:10 AM

Title: How to render dust filter material?
Post by: nonamer on June 13, 2016, 07:03:10 AM
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!
Title: Re: How to render dust filter material?
Post by: Artur on June 13, 2016, 09:31:41 AM
Same problem here.

Looking for new ideas.
Currently I am using bump and diffuse mapping, but the texture seems flat and very fake.
Title: Re: How to render dust filter material?
Post by: TpwUK on June 13, 2016, 09:44:18 AM
These kind of materials are notoriously difficult for any render engine. The only real satisfactory result will only be achieved via displacement.

Martin
Title: Re: How to render dust filter material?
Post by: Esben Oxholm on June 13, 2016, 11:05:49 AM
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.

Title: Re: How to render dust filter material?
Post by: Finema on June 13, 2016, 11:42:52 PM
Hi
Perhaps a starting point with a seamless texture in Metal Material + Bump, Roughness and Opacity.
it's just a test.....
Title: Re: How to render dust filter material?
Post by: Finema on June 13, 2016, 11:52:29 PM
here an other view
Title: Re: How to render dust filter material?
Post by: Artur on June 13, 2016, 11:56:25 PM
Good solution.
But the foam material I am making doesnt handle close ups very well.

Any advice on this?
Title: Re: How to render dust filter material?
Post by: TpwUK on June 14, 2016, 01:07:33 AM
@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
Title: Re: How to render dust filter material?
Post by: nonamer on June 14, 2016, 03:18:00 AM
Quote from: Finema on June 13, 2016, 11:42:52 PM
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.
Title: Re: How to render dust filter material?
Post by: Finema on June 14, 2016, 04:26:14 AM
here in attachment >
Title: Re: How to render dust filter material?
Post by: Artur on June 14, 2016, 08:42:30 AM
Nice one.
But the pattern is predictable.
The foam is a more organic and random structure.
Title: Re: How to render dust filter material?
Post by: Finema on June 14, 2016, 08:49:26 AM
In this case, you can open the texture in Photoshop and randomize it
Title: Re: How to render dust filter material?
Post by: Artur on June 15, 2016, 12:51:42 AM
Yes, Photoshop is a solution for the predictable pattern problem. But the seamless integration would then fail...
Title: Re: How to render dust filter material?
Post by: Finema on June 15, 2016, 02:57:31 AM
you can recreate the seamless in photoshop with Offset menu.
Title: Re: How to render dust filter material?
Post by: Finema on June 17, 2016, 11:08:18 PM
a good result here >

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