Well Dario, I think I've mastered the tool I use most- but what I haven't managed to master is the term/name for each one. So I had to go thumb through a few catalogs to find one that had pictures of all the different types of tools, and I found out that it's a skew that I use and like a lot [^]. So then I came back and could answer this poll. (You know, if you would have included a description like I would use, something like- the long one kind of like a butter knife, but pointy with an angled tip that's pretty flat- I'd have know it right away!)
Like most people, I avoided the skew at first and felt totally incompetent when it was in my hands. But when I took a bowl turning class, the instructor <s>forced us </s>encouraged us [?] to use it and since then, I've found I use it almost exclusively.
Now just don't ask me what specific type of skew it is- I see other people attaching adjectives and measurements to theirs, and I think I need to go back to that catalog and get a little more detailed info! [:I]