Ive done a few repairs this is next. Handle as it should be then folds to the machine into the recessed area. I havent used Helicoils before but maybe the are a direction. Had a tool and die maker that could have fixed this in his sleep but no longer has his shop. Did go to a local CNC guy for something a while back had it done twice and didnt go back as it was still not right.

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area it threads into is stripped

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Threads on the handle end are very rounded not sure if a die would crisp them up enough that it can be reused like to if I can

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Also missing the nut which would allow you to lock it in place and direct where it pivots, likely done by a past owner to get more thread bite

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