Method of brazing a honeycomb

A method of brazing a honeycomb for air sealing onto a braze surface of the front end of the blade of a rotating machine, comprising the steps:

• placing a filler sheet between the honeycomb and the braze surface;
• constraining the honeycomb in the seal width direction so that the seal width direction of the honeycomb corresponds to the seal width direction of the braze surface while keeping the figure of the honeycomb at the same curvature with that of the braze surface;
• vertically biasing the honeycomb against the braze surface by applying a uniform pressure along the seal width direction of the braze surface and the honeycomb using a jig;
• heating the assembly to braze the honeycomb and the braze surface;
• and
• allowing the honeycomb to freely vertically heat expand by displacing a jig vertically while said jig continues to bias said honeycomb against the braze surface.