Thank You Mr. Gabor, i think to have understand what You say. But i have attached some image (is it not a problem?) of my two different result the first and the second are the static object (the second rotate manually by mouse) the third is when i animate. This last show a different shape; is this due to what You said?
(apologies for my face, i cannot edit it!) Thanks, ciao, francesco.
<<attachment: Screenshot1.png>>
<<attachment: Screenshot2.png>>
<<attachment: Screenshot3.png>>
