Ok, here goes... (knots are pretty hard to describe unless you are working with a common vocabulary... I'll try pics) I'm guessing at the embedded pic tags, If Chris changes them I'll edit the post - they won't show up at first.
http://www.slinging.org/images/Netsling.jpgThe Sling:
This was a first experiment. The twine used was 3.5mm polyethylene/polyester braid (8 strands of each) with a filament polyethylene core. We use a range of fibres in trawl nets, up to and including dyneema/kevlar. The modern PE twines match up pretty well with the super-high-tech stuff, at much lower cost.
The challenge here was to make a sling with ONE piece of twine. The sling was eye-spliced in the middle for the retention loop and "sleeved" until the split. The core was withdrawn from 3/4 of the length and braided. The two halves (both sans core) then rejoin coax style again until the retention knot.
In the photo below, end 2 is spliced for the loop, and drawn through the hollow core until the pouch split. End 1 (with core) is spliced into the hollow end 2. You can use "real" splicing tools, or you can tape a point onto the end that you are threading. Taping the end to a piece of wire or similar can make it easier too.
http://www.slinging.org/images/Layout.jpgThe top image to the left shows the path that I netted the pouch with. A further refinement would be to carry the number of cords needed through the sling cords, or split a larger core into several. Even numbers are probably better - 6 seems to be about right. A planned refinement is to try another sling using a twelve strand round braid for the cords, split into 2 three strarnd braids for the pocket edges and 6 for the netting. All 12 strands rejoin in the release cord... The lower pic might help explain. I think this will be a pretty elegant braided sling - a little different.
The Netting:
And here is the crux... Netting is easy once you get the hang of it. Watch Greek fishermen mending their nets for a knot speed tying clinic.
Traditional diamond mesh nets used to be made by hand using a netting needle to hold twine and a mesh stick to gauge the size of the meshes. The mesh in the sling is too tight for a needle, so I had to thread the knots by drawing the entire length through each mesh. The mesh stick assures consistency, but isn't neccesary - I used a pencil for some of the meshes and the corner of my pinky for others.
The first row of meshes is cast on the sling cords using
Clove Hitches.
Lark's Heads could be used to, but 98% of fish nets use clove hitches - there must be a reason that I don't know; I'll ask my friendly neighbourhood Icelander next time I see him!
http://www.slinging.org/images/Netting.jpgThe knots used to make the net are
Sheet Bends. When tied in a net they are known by various names, including
Netting Knot, Weaver's Knot, Mesh Knot... They can be tied a few different ways, depending mostly on what village or island you grew up on.
The pics describe it better than I can. Using the technique shown is quite a lot faster and more accurate than methodically tying individual sheetbends the way most people are taught. The mesh stick (shown with the hanging meshes looped around) gives you nice even meshes. Care must be taken when drawing the knot tight to avoid "capsizing" the knot - at this scale it is a little bit easier to misform the knots.
Try practicing with larger meshes and twine before tackling a sling pocket - it will go much smoother. The pouch on the green sling tapers at the ends in a mostly freeform way. I think the second design with all six strands carried through to the ends might be a little tidier.
Hope that helps a bit! Questions welcome...
Matthias
