of 26 inches of mercury and held for 1 hour the pressure applied by the plates was about 12 psi at temperatures above about 140 u00b0 f the adhesive layers may not sufficiently consolidate while at temperatures above 140 u00b0 f the adhesive may begin to cure making subsequent forming difficult the consolidated adhesive layers were then cooled to room temperature and stored under vacuum upon removal from the assembly the consolidated multi layer adhesive structure had a thickness of about 0 075 inch it was then cut in a gerber cutter with a cutting blade angle of 55 u00b0 to form multi layer adhesive strips having heights of 0 075 inch widths of 0 23 inch and lengths of 38 inches each strip was then formed into an adhesive fillet shape by passing the strips through a roll former as illustrated in fig1 and 11 the roll former was equipped with a catcher as illustrated in fig1 which prevented the formed adhesive fillet from sticking to the lower roller the formed adhesive fillet had a cross section similar to that shown in fig8 having an angle a of 107 14 u00b0 an arm dimension b of 0 226 inch a chord length c of 0 363 inch and a radius r of 0 306 inch during the roll forming operation the cross sectional area of the adhesive fillet was reduced approximately 60 percent in comparison with the initial cross sectional.