PROBLEM OCCURRED IN C FRAM WHILE CAMPING 3 EXTRANAL CLAMPSWe see the picture of clamped lugs by using external clampsIf we clamped lug in center slot, lug will be bend due to less lug thickness & clamping pressureLug dont bend while clamping, & running the rib (profile) (more web thickness resist the bending the lug)If we clamped the lug by using slot 2, slot-1 easily compressed. so automatically potential force acting in between lug & component It bend while running the web thickness, if web thickness is reduced (5.4 to 1.6) gradually Rib & lug both are bend due to less lug thickness, if bend the lugs automatically web come up word so web thickness was reduced while machining.