Rusted metal in Blender with PROCEDURAL textures (nodes tutorial)

Описание: This simple tutorial shows a quick way to add rust effects to 3D models in Blender. This is a beginner tutorial that demonstrates the use of shader nodes in Blender 3D to create procedural materials. Adding rust to 3D models makes them look more realistic. This can be very useful in hard surface modeling and industrial design and is an easy way to add realistic details to 3d models in Blender.

In Blender, procedural materials can be created using shader nodes in the shader viewport. What is special about procedural materials, is that they do not need texture image. Instead, the required textures are created using mathematical equations. Shader nodes in Blender provide the building blocks of creating very complex materials via these equations.
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Dis-colored edges:    • FAST and EASY material with discolored edg...  
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🧐 Further reading:
If you want to learn how to create materials that look like eroding paint in Blender, no problem - let’s head over to Blender, and open a shading viewport. You won’t be needing all the settings of the Principled BSDF shader, so let’s replace that with a simple Diffuse BSDF shader node.

Then, add a Texture Coordinate node, a Musgrave texture node and a Color Ramp node. Now, let’s set up the nodes to show three colors: one for the base metal and one for the paint job on top of the base metal - and finally, the third color will be right at the edge of the eroding paint. To make the base metal appear more shiny than the paint, let’s first add a Glossy BSDF node to mix with the Diffuse BSDF node we already have. Then, duplicate the Color Ramp node and connect it to the Texture Coordinate node. For this new Color Ramp node, we won’t be using the colors - instead let’s set up its alpha values to then use to control the roughness of the Glossy BSDF node. Next, once again, duplicate the Color Ramp node, and set up its alpha values to this time, control the Mix Shader node. Make sure the sliding tabs on the three Color Ramp nodes align with each other so that the shininess of the metal does not overlap with the paint.

Now, let’s add some bumps to the base metal, by adding a Bump node that takes its height value from a Noise Texture node. Then, to add some brush marks to the paint, let’s add another Bump node, along with a Voronoi Texture node and a Mapping node. Set up the scale values on the Voronoi and the Mapping node to get the effect of brush strokes on the paint.


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