Complex sentence: The rounded, tapered slots were designed for the screwdriver to cam out (pop out) of the screw under high torque in assembly lines--for speed and to prevent stripping damage, but in some applications "camout" can be a disadvantage.
Split into simpler sentences: The rounded, tapered slots were designed for the screwdriver to cam out (pop out) of the screw under high torque in assembly lines. This prevents stripping damage, but in some applications "camout" can be a disadvantage.