referring additionally now to fig2 the method 10 is representatively illustrated after the latch structure 30 has been expanded outward upward displacement of the wedge 36 by the actuator 34 has outwardly expanded the latch structure 30 so that the casing string 12 is plastically deformed outwardly deforming a sidewall of the casing the latch profile 16 is thereby secured to the casing string 12 note that a minimum inner diameter of the latch structure 30 is substantially equal to the minimum inner diameter of the casing string 12 thus the latch structure 30 permits full bore access through the casing string 12 however the latch structure 30 could have an inner diameter smaller than the inner diameter of the casing string 12 without departing from the principles of the invention the bonding agent 32 adheres the latch structure 30 to the casing string 12 and or forms a seal between the latch structure and the casing string if the latch structure 30 is made up of individual segments the bonding agent 32 may prevent the segments from falling inwardly the whipstock assembly 18 has been lowered in the casing string 12 so that the keys 26 operatively engage the latch profile 16 this engagement secures the whipstock 20 and radially orients the whipstock relative.