Yuriy Kulikov

Thanks for the advice, but what if I need 2 different shaders (materials) on different sides, and not just 2 different pictures, colors?

There are many lessons on the TOP network on the topic of top networking, but there are not enough specific natures of files(hip) ready-made for simple solutions:
1) render asset variations
2) preservation of variations in hemometry
3) render simulation with different external objects
4) and so on ...
Simple elementary examples surely everyone has similar simple files, they will be very helpful for beginners.