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What is the easiest way to make a photo-realistic sponge? I am just asking this question out of curiosity and boredom. I know the modelling is really easy and I got that covered but the shading is kind of confusing and I am not really sure how to make the shading for a sponge. So I have a simple question in my mind, how do you make a cool simple sponge in blender with a very simple but photorealistic shading?

I want a simple answer!!

Something like this👇

enter image description here

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Here is my proposition: A mix of 2 Noise Texture and one Voronoi nodes, one with small orange dots on a yellow background, another one with a little bit bigger white dots, and at last the big orange holes. I use the same mix for a Bump node. I put the Specular at 0 and the Roughness at 1. I also give it a bit of Subsurface. For real holes, or aven if you want a bit of relief on the edges, you could use a Displace modifier (with Voronoi texture) or sculpt some holes:

enter image description here

enter image description here

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    $\begingroup$ Hummm grainy cheese $\endgroup$
    – Duarte Farrajota Ramos ♦
    Oct 26, 2021 at 10:26
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    $\begingroup$ @ Duarte Farrajota Ramos, I would say cheesy sponge $\endgroup$
    – moonboots
    Oct 26, 2021 at 10:27

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