Bill Skinner wrote on Aug 21
st, 2017 at 11:30am:
why I am more accurate with a braided sling than I am with a para cord sling.
Generally this is correct, but also "para cord" isn't allways the same as "para cord" - there are offered better and lower qualities. I have (for example) bought a black round very fine and thin braiden yarn of polyester (12 strands and D = 1,0 mm) what is nevertheless incredible "stiff" or "resistent" against twisting. It is braiden by mashine and so braided very strong / dens but flexible nevertheless.
Looks like "para cord" (without pattern) but isn't one. It has no "sole" (germ.: "Seele" - in german so also is called the "core" of ropes or yarns - the same word as the "sole" of men) and can be bought by "kanirope" (rope factory in germany).
If you would braid with good braided yarns (instead of twistet yarns) than you would get a sling that is "extra-twist-resistant" and still thin.
Even when a sling is braided with five strands (flat) but from twisted strands while all strands are twisted in the same direction (clockwise or counterclockwise) then even the braid tends a little bit to wind down. This braid than is "twist-resistent" for only one direction. I mean "braiding" alone can't terminate any "drill" totaly.
Best way to make a braid "twist-resistant" for each direction is to braid a "tube" - a so called "coat braid" (with sole / core). When this is realy good braided but from twistet jute, wool, silk, hemp, sisal or linen then its twist-remembering has to be ereased by (multiple) watering and drying.
But when it is braided from twisted yarns of "plastic" (nylon, polyester or polypropylen ...), than the twist-remembering can only ereased with slow heating while a long time (2 - 3 hours up to 90° celsius - some more but even more slow when made of nylon because nylon keeps some water that begins to boil (boiling ?) if have not enough time to damp out).
So there also are offered some braiden ropes where its "bundels of monofilaments" are not twistet, because a rope of twisted strands allways keeps a little instabil against twisting down (= re-twisting / conter-twisting).
A special process of heating could also twisted plastic-yarns prevent from twisting down, but even that should be allready done by the factory because for "own's kitchen" this process is too awkward and difficult / sensible.
But you are right: There also are offered some "types" of "para cords" thats "twist-resistance" is very low. And "yes" - the accuracy of a sling can be very bad if its cords are braided too "sluffy". Therefore my tip for you: When not principal allergic against all "in-natural" high-tech materials then once in future also try a 2 or 2,5 mm thick "nylon line" what is stiff nearly like thin wire and made for mewing lawns.
Have you ever seen such nylon lines? It's neither twisted nor braiden nor woven but up to 4 mm thick and "strong as Harry" even when only 1,5 mm thick!
To get this fixed on leather-pouch is a little bit "tricky" (I must admit: "right very tricky") but when mastered this problem than it is the most perfect stuff for making the worlds best and most effective slings: Thin, light, elastic, hit-resistant, stone-resistant, light-resistant*, rott-resistant and EXTREMLY twist-resistant. It's almost like the RESISTANCE in its self.
But never forget: Also thick leather can be a wonderful fitting material for accuracy slings - as a sling (cords) it is only very sensible against water, rain and wet weather (fog).
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* light-resistance of nylon is not totally as high as on polyester but nearly. For this the heat-resistance of nylon is a little bit higher as on polyester.