Hey Mark Nine, welcome aboard! I've never tried sumac, but I've seen pictures of canes made from it. Only way to know for sure is to let it season and try making one. I've turned green staghorn sumac on my lathe years ago and found it very sticky. Never tried a seasoned piece, though.
As for grape vine, basically the same advice: let it season and try it. I've seen canes made of vine but I can't recall if any were grape vine.
As for grape vine, basically the same advice: let it season and try it. I've seen canes made of vine but I can't recall if any were grape vine.
