In KNIVES 1970′ Imperial Forced Patina July 29, 2023 Share Share on Facebook Share on Twitter Pinterest LinkedIn Smple 20 minute Hot Apple Cider Vinegar to force patina and totally restore. Air dry and finished with Blade Wax. by Sausageman13 KnifeKnife PornKnives Write A CommentYou must be logged in to post a comment.