To me forcing a patina is a kind of forgery...it is a fake trying to pass for real. Kinda like going to the trophy shop and buying yourself a first place trophy instead of actually winning one. None of my carbon blade knives that I bought new have a patina, instead they get wiped down after they get used and at the end of the day. Knives I bought used like my 1920s era Remington Boy Scout knife do have a patina and on old knives I leave it be.