Despite placing the large tail structural parts on 8 inch the Scotch Bright wheel, tool marks from Sonex still were struck into the aluminum. They were very deep from Sonex. Between a file, sand paper and Dremel tool with Scotch bright wheels and pads the job is finished except for the skins. I wanted the metal to look relatively bright; not have a bunch of scratches. I don't want to remove too much material but need to determine if my present level of deburring is acceptable.