I'm trying to make a circular 'brushed metal' look (material applied to a cylinder), how can I make the pattern circular instead of straight lines? : r/blender
Blender 3D tip — Realistic Specular value in Principled shader - BlenderNation
Principled BSDF — Blender Manual
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
Ideas for Cycles Shaders - Blender Development Discussion - Blender Artists Community