Bluffman,

I use a cone shaped stone in my 3/8 drill to get the rough shape and size. The stone does a pretty good job itself but I do finish it off with my Dremel tool and a fine stone. Once finished I use rubbing compound to clean and shine the surface. The finishing touch is with a car polish. Gives you that mirror finish. I'm sure there are other and probably better ways but this is how I do it and it works for me.