an example method of repairing an airfoil includes the steps of securing additional material to a worn airfoil and limiting movement of the additional material with a guide . the method alters some of the additional material to form a desired airfoil contour . another example method of forming a portion of an airfoil includes the steps of securing additional material to an airfoil , limiting movement of the additional material with a guide , and altering some of the additional material to form a desired airfoil contour .