noob here. I am successfully applied light emission on a object - that object however is somewhat a merger of several objects made with CAD software and imported as STL.
long story short, I can either split that object which will be (for me) rather complicated due to the geometry of the part, or cheat (if possible) and only apply the light emission material to certain surfaces of that object.
Is there a way to do that? right now the whole object is glowing and I would like to limit the glow to certain surface of that object.