This question come up from time to time, I guess it is like Del said. I worked on cars and trucks form the time I can remember and started in a shop making a living at it by the time I was 18 but still took me years before I called myself a mechanic so I guess everyone is different, I just build wood bows, that's it for me.
to me it is when you truly master all aspects of wood bows and I am not sure when or if that will ever happen to me so as I said I just build wood bows.
Pappy