you could use a threadless BB or get a frame builder to braze in a new sleeve into the BB shell and then re thread it. or use helicoil which just replaces the thread itself which IMO isn't that good, but can work if treated carefully.
@Dylan started
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you could use a threadless BB
or
get a frame builder to braze in a new sleeve into the BB shell and then re thread it.
or
use helicoil which just replaces the thread itself which IMO isn't that good, but can work if treated carefully.