Work out where the bearings are going to go, TIG on some extra metal, turn down to 30.05mm
I found someone on-line who has dismantled BB30 bearings and ground down the outer race so that it will press-fit in to a BB92 shell. Which is almost, if not as, bonkers.
@Dammit started
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Work out where the bearings are going to go, TIG on some extra metal, turn down to 30.05mm