Re: Nothing is ever easy with these things....
That's easy, put a round file in a drill and let it spin. Works really great. You can break the file in half to make it shorter if you want to.
Just to clarify, put the sprocket in a vice and with the drill spinning press the spinning file against the outer edge and move your drill around and around. It will go fast with the spinning file.
Last edited by toytime; 02-28-2009 at 10:32 PM.