Originally Posted by
gugie
I think it's been well established that I have a hard time leaving well enough alone, but in this case, I'd leave well enough alone.
HA!
May I quote you?
If I had to hazard a guess, OldsCool, I'll bet boring the through bore was the first operation that the machinists at Campy did on those parts. Before turning the profile in between centers. To try to do it after the fact will be very difficult, I would think. How would it be held? Maybe in the center of the shaft in a four jaw chuck. Only a project for the seriously bored or the whacky, in my view.