I am doing this Blender Guru turorial. When I look at the metallic text I see this "shadow" on the inner sides of the text (see image). Now I am not certain what is the reason for this "shadow" ? Is it a shadow or did I do something wrong with the UV unwrapping (something that is very new to me) ? My file is here, the textures are packed into the file.
As @Carlo suggest, the straight line is not a shadows, but the texture instead.
If you toggle muteM Mapping Node, your texture is correct.
In the Blender Guru Example, the Mapping Node is applied to the Noise Texture to achieve a "scratchy" effect.