Hi @spikeyxxx,
I thank you very much for the advice. I definitely need to add some more details around the design as you pointed out. The cue about the number of vertices of the two circles is very useful to me: I tried to keep the same definition on the whole structure but actually this detail had escaped me, as well as I will try to clean up the directional knob (too many additional details compared to the whole resolution of the mesh).
I will follow the advice you gave me and once all the details are fixed I will proceed with the render.
Thanks a lot to all of you!
