Part of my daily stash is a single piece of paracord that was folded 6 times, then the three pairs of lines were braided together into a sling. The prototype which is with my bag of tricks was 3 pieced, but why I didn't think of the single strand version is beyond me. Stitch the ends back on themselves to form loops, and you can run a 'biner through each end as your sling attachments.