Nozzles are provided, for applying setting resins onto the edge of a panel, in some embodiments the cut edge of a panel such as a honeycomb panel. The nozzle comprises a connector portion and an application head, wherein the application head comprises: a) a supporting wall, and b) a curved finish wall joining the supporting wall along an edge at an angle of greater than 92 degrees and less than 120 degrees. In some embodiments, the curved finish wall has a curve radius which remains between 1.0 and 7.0 cm throughout the length of the curved finish wall. In some embodiments, the curved finish wall has a trailing edge profile which is smoothly curved and a leading edge profile which is scalloped. In addition, methods of applying a setting resin onto the edge of a panel are presented.