Teg wrote on Oct 31
st, 2017 at 3:18pm:
4) Pull the string to be dropped into the core and cut it there or taper it by removing plies as in 2). Except reduction in diameter, no loose ends or fibers will be visible on the surface.
Pulling the string into the core is obvious with round braids. The flat standard braid actually has two cores. One on the left, another on the right. See appended picture on how to do it: a sketch with a track plan (how the strings move), a drawing and the actual braid. I used core 2, but you could use both cores at the same time.
Up to now, I never bothered to do this in a sling.
I've used this method on a couple of slings, and while a bit tedious, it can be used effectively. Awhile back I had an order for a paracord Balearic sling. Paracord is so thick that it's hard to taper it subtly, but with this method and some experimentation, the sling came out well. The last few decreases were cut, melted, and sewn in place, but the most of the taper involved dropping strands into the cores.
-Timothy Potter