I am making a beverage can factory animation now. Movement of cans is completed and now I made material of can (lid, label and bottom). Top and bottom lid are with image texture and color ramp, label with image texture in color. UV mapping is also completed and finally I tried to assign all the material to multiple objects. All objects are the same cans.
I selected multiple objects, original can at last. Object > make links > materials. They are successfully assigned. Then UV mapping. I bring the can lid material on top then…. Object > make links > transfer UV maps.
Iron texture is successfully assigned. Then the label.
It is also assigned. But as you can see, this is NOT what I want.
I want to assign all three materials (a top lid, label and bottom) at the same time. Same geometry, same materials… some may think “why don’t you simply duplicate them?” But I can’t. Because I already made quite complicated movements of cans, animation, Rigid body constraint, shape keys and so on. And it took a whole month to do it. I can’t do it all over again. I just want to assign three materials to finish the process. My job is almost completed but I can’t move forward now. Does anybody help me? It will be very much appreciated.
2021・04・21
Thanks for your advice. I have made a lot of progress.
I combined the image texture in one. "3 materials in one" And 3 of them are successfully assigned. Now I have to adjust the surface.
I followed the Gordon Brinkmann's advice, made it black and white.
And plugged the image texture to basic color and color ramp to metallic.
They are all successfully assigned.
Still there are a lot of thing to add or adjust. I'll keep working on it.
There is one problem.
About painting black and white, looking from the side, it looks good. But when I looked from the top....