I would like to make a good crafted combat knife. From what I read on wiki crafting a knife doesn't require any proffesion or skill. But I am not sure if Im doing it right. When you want to craft lets say advanced, unique, superior or even improved knife, do you just have to create item on workbench normally or is there something else needed? I made about 20 knives so far and none of them have any abbreviations. Am I unlucky or doing something wrong?