A lot of time is spent polishing and "makingup" surfaces which are architecturally visible. In FSW prefabricated panels, the reflections are merely caused by the surface appearance of the aluminium plates and profiles in the as-delivered state, not by the reflections caused by welding heat input. Finland, 1994 with a M.Sc. degree in welding Dremel 422 Felt Polishing Cone - dremelTurn your Dremel rotary tool into a powerful polisher with the 422 Felt Polishing Cone. Good for polishing metals, plastics, stones, ceramics and glass. The polishing accessory is made to take a semi-rough finish and polish it to a smooth finish. The narrow shape of the accessory is excellent in polishing corners and hard-to-reach places.