hi. It is very difficult to deal with rough textures of metal and varnish. All mirror prefixes (there are three of them) in SH3D give the same polished result. I will try to post my experiment today. For other metal grinding options in SH3D, you can only use different JPG images. It all depends on how these textures are distributed in the model on the surface. Sometimes everything works out, sometimes the textures are made in pieces with turns, then everything is bad. I would also like to know the method of a polished rough surface. But I don't know yet.
Here is an imitation of unpolished steel using an image in texture
