The finish (outer) layer of CF can also serve to increase the "toughness" of the component. It can resist abrasion and damage due to bumps and knocks. Usually it is a 90 degree weave and may be covering a uni-directional CF tow which is more prone to damage.Jared said:Do those carbon weaves have a purpose? Or are they just for looks? I have read that different brands have different different types of weaves but are the weaves laid the same way in the whole frame or is it just at the top layer?