Davnes007 said:BEHOLD.......My sad artistic skills, but incredible GIF skills... :D
Based on that it should at least carbon scar the entire visible underside that follows the path of the blade.
Unless Ady wants to mantain that the AT-AT's armor is too strong to show such damage, which is fine since the concept that a Lightsaber can 'cut through anything' I always did find a little silly.