So, I made 1 more attempt and failed again. Here is a result:
Again I failed on bad, not centered drilling of the blank and as a result I see different size of wings on segments. Although this time I drill it on lathe, but I believe that I did it wrong.
Can someone, please help me out... Please describe, how do you achieve dead on center drilling of blank on lathe or drill press, or suggest video or pictures. I appreciate your help very much.
Thanks in advance.