other to create the repair doubler for the bonded repair 103 in block 404 a temporary separator film not shown may be prepared and laid onto the prepared repair area 102 after which the repair doubler may be installed onto the separator film this may ensure that the ply paths of the repair doubler are aligned in block 406 a vacuum bag 106 may be installed over the entire repair area 102 without any extra materials between the repair doubler and the vacuum bag 106 in block 408 a vacuum may be drawn on the vacuum bag 106 and all obvious vacuum leaks may be sealed to ensure a vacuum pressure of at least 18 20 in of mercury in block 408 a a determination may be made as to whether there exist any undetectable leaks in the vacuum bag 106 if there are no undetectable leaks in the vacuum bag 106 a in block 408 b the method may proceed to block 410 if there are undetectable vacuum leaks in the vacuum bag 106 the method may proceed through blocks 408 c 408 k which will be hereinafter described if there are no undetectable vacuum leaks in the vacuum bag 106 in block 408 b then in block 410 the vacuum bag 106 may be rapidly heated to.