resurfaced brake discs comprise a carbon disc and a wide tape of wear resistant material applied to the periphery of the disc , the tape being cut on one or both sides of the disc to allow the tape to be folded over the wearing surface of the disc . the tape is impregnated with a curable resin and heated under pressure to form a strongly adherent friction surface on the disc . boron - containing or other additives may be added to the tape to improve friction qualities or to increase the oxidation resistance of the surface . additional resin impregnations and heat treatments may be employed to strengthen the tape surface . the method is not limited to worn brake disc but may also be employed for resurfacing new brake discs as well .