Fiction! It's a little difficult to re-align the fixture, but any machinist with more than three brain cells to rub together should be able to turn a sufficiently accurate mandrel to hold the parts in alignment while some rivets or shoulder bolts are installed.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!