3M Between Coats Finishing Pads are used to prepare surfaces before applying the first coat of finish or sealer and again between coats to obtain a super-smooth finish. 3M Heavy Duty Stripping Pads are designed to help remove thick coatings of paints, varnishes, wall paper paste and other finishings without scratching or gouging the surface. The tough, durable pads trap residue making stripping easier and quicker. The synthetic material does not rust, splinter or shred like steel wool.