I have been trying off and on for quite a while to figure out on my own how to make a good braided/woven sling. I finally came up with a design I actually like; ok I love the way it releases and the way it feels when I use it. It has a single six string flat braid for the retention cord. The release cords consist of two, three string flat braids, and the pouch is woven with a small split in it. Any way, my problem is the pouch seems to be a lot more slippery than the leather I'm used to. I can only use one rotation or I highly risk stone slipping out. It still flys out early one out of every ten throws.
  I don't believe it is the double release cords because I use them a lot on my leather pouch slings, in fact I prefer it.
  The sling is completely made of jute twine.
  Any ideas to and a little grip to a woven pouch?

perhaps the problem is that the split is too big.

Maybe the pouch is too small, it may need to be a little longer.

Willeke

There seem to be at least three types of split pouch.  The long sort on which the stone is balenced, like the the Bollinger design in the guide section of this site.  With those if the cords are too short the stone tends to fall of the sde and if too long down the middle.  Then there is the one which has a centering split in what is essentially a pouch sling like the record breaking one a pic of which is in the gallery section.  There is also the sort which depends on having a egg shaped projectile which is big enough not to fall through the hole but small enough to sit with the cords around it like a belt.  I've tried making one of the latter types out of jute but it was disasterous.  The rocks I was useing were rough so didn't leave the pocket., nasty.  But if you believe that mortification of the flesh is spiritually benificial then it's the way to go, clubbing yourself with a home made mace has got to be more virtuous than just wearing  a wimpy hair shirt.