How do I add a worn scratched silver metal to an object?
Which nodes do I need in composting?
Hi,
Why compositing?
Use only Node Editor. . . 
For exemple (Blender 2.80) ** This example is not mine. It’s just an example of Node retrieved from the Internet **
The easiest way is to grab some PBR textures from a site like cc0textures and plug them into a Principled Shader.
