Your use of an AC boat mast is a poor example, pay any engineering company enough money and you can get a pretty reliably consistant result in most production methods from being willing to sacrifice any unit not in specified tolerances.

With the AC boat masts my guess is they made 10 or so masts and hand picked the two most similar, probably trashed the rest so that other teams wouldn't be able use them.

To get consistant results within tight tolerances from a budget production method ( marstrom for example ) one would have to over engineer the product so much to over compensate layup differences ( after all humans did design the engineering process )that the end result would look similar mast to mast but not the lightest nor cheapest