Originally Posted by Faster
I would think that the cover was removed, leaving the stronger, thinner core to go onto the drum. Same as we did, only we stripped the core out of double braid and replaced it with the (lower stretch) kevlar line.
In many modern lines, the strength is about 50/50, but the exterior jacket is often far more cleat and hand friendly, and far more UV/abrasion resistant than the inner core. Some inner core materials aren't even braided, and are very prone to snagging because they're just loose fibers..