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I am trying to make a gear material where there are highlights that are like lines facing outward from the gear's center. This image shows what I am trying to accomplish. How can such an effect be done?

Gear

Thanks in advance!

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  • $\begingroup$ Voting to reopen this as I interpret it to be about the bump map to create this pattern, not necessarily anisotropic shading. $\endgroup$
    – Allen Simpson
    Commented Jan 19, 2021 at 7:07
  • $\begingroup$ Yeah, I'll second that. $\endgroup$
    – Christopher Bennett
    Commented Jan 19, 2021 at 7:38

1 Answer 1

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Here I'm converting Generated Coordinates to something like Object Coordinates so this should work on any size of gear.

A Gradient Texture set to Radial gives us this output.

enter image description here

If we feed this into a Noise Texture we get this.

enter image description here

We can mix in a bit of the regular coordinate space to give some irregularity.

enter image description here

And here I've used this output to drive the base color between two shades of brown, the roughness, and a Bump Node. I've also used a bit of regular ol' anisotropy.

enter image description here

And since these are generated coordinates based on a bounding box around your mesh, you can easily use this on any size of gear.

enter image description here

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