Platinum? 3/4 in tape-on bullnose corner bead is used to create a smooth, rounded look to standard drywall corners. Paper-faced bullnose bead adds contemporary styling and a sense of openness to any room. Tape-on bullnose is applied in the same manner as all other tape-on beads. Joint compound is used to embed the paper-faced bead to the wallboard paper. The result is a beautiful, rounded corner that will not crack or chip.