I may use this process on some handlebars for BO9! That sprocket looks great!Figured out a good way to rust raw metal pretty quick. My secret recipe: Salt water with a little fertilizer mixed in, put it in a spray bottle, spray the part every once in a while. 2nd day so far & looks pretty good, another day or two should do it. I have a before pic & will post a before & after when I am happy with the finish!