How to create realistic metallic models in Blender

Metal is an extremely tricky subject to reproduce in 3D. To make it look believable we need to pay attention to many different things: details in specular highlights, rusty parts, edge scratches, roughness and glossiness variation. In this Blender tutorial, I'll show you how to easily create an old and rusty metal. We'll also cover various properties of the old metal and ways to reproduce it using material layers.

First we need to start with a pretty basic material, to which we will add details, one layer at a time. So, we'll make a dull metal base, cover it with rust, then go even further and scratch the surface until it looks terrible (which is what we want, in this case). In the final step we'll place the lamps to emphasise the material's highlights.

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