Anisotropic brushed metal effect visible in the base of the pot above
This short tutorial will show you how to create a realistic steel shader with anisotropic reflections.
- Open the start file here. Select the bottom of the pot and assign an Ai Standard shader to it. Rename it as 'Base'.
Assign Ai Standard shader to base of pot
Now we are going to create the steel shader with the brushed metal effect.
- Reduce the Diffuse Weight to 0. Reduce the Specular Color to a mid-grey. Increase the Specular Weight to around 0.7 and increase the Roughness to around 0.8.
- Connect a ramp to the Specular Anisotropy attribute.
Ramp connected to Specular Anisotropy attribute of Standard shader
- Change the Ramp Type to Radial Ramp and change the Interpolation to Smooth. Insert some black and white colors into the ramp so that it looks like the image below.
The Anisotropic brushed metal effect should now be visible in the base of the pot. However, it is lacking the bumped ridges associated with this effect.
The anisotropic direction is based on the UVs of the mesh you are using.
Now we need to create a scratch map and connect it to the bump attribute to achieve a subtle brushed metal effect. We can do this in Photoshop.
- Go to Filter-> Noise-> Add Noise to add some noise to the image.
- Go to Filter-> Distort-> Twirl to add a circular effect to the noise. You may need to do this two or three times to get the desired effect. Crop the image and save it.
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- Create a file texture and open the saved noise image. Connect it to the bump attribute of the Base shader.
The final scene can be downloaded here.