Derek: Where do you get lost? It can’t be that hard to follow words!
Your finish takes the end under itself in a Half-hitch; my revision takes it over
itself (“over”~=“outside, away from core”) then back under, BUT in this case
I say to include the parallel strand of the knot (the twin of the two eye legs)
in what is cross over/outside, and to then tuck under both, or “between”
those twin parts and the SPart.
NB: Tried this knot in a supple smooth slick multi-fil PES or PP (or mixture?)
and the knot got too tight for favor! So my earlier assessments of ease of
untying likely fall to Roo’s chary eye re jamming at greater loads (don’t have
my 5-to-1 pulley set up at the moment). --retreat! (to a different and double
tucking, hopefully)
Gordon, the Swami Loop is better tied–for the sake of UNtying, at least–by
bringing the end back into the initial Overhand from the opposite side. Ref.
http://www.rescuedynamics.ca/articles/knots/Knots.htm image
0) consider the top diagram, arrow showing end’s entry through Oh. as
from 3o’clock to 9o’clock, crossing Over-Under;
- replace this with end entering at 12o’clock to 6o’clock (just for the tying)
and crossing Under-Over-Over.
.:. the Oh thus assumes a form w/collar for easier loosening–ABOK#1185 vs 1183.
There might also be less force transmitted through it to the tie-off (dbl) Strangle H.
NB RE THIS SITE’S IMAGE FOR THE FISHERMAN’S KNOT: the orientation of
the Overhand components in the upper image (before back-ups) shows them with
ends-wrapping-SParts asymmetric geometry; this is a naturally acheived form
from heavy loading, and is generally what I’ve found in Commercial Fishing Knotting;
the orientation of the tie-off/back-up Oh.s is ends-&-SParts-twist symmetric
orientation, which is harder to maintain (given that the SPart only is loaded).
Frankly, it would make more sense in the climbing application to REVERSE these,
wanting the better jamming asymmetric form for the tie-off, and hoping that the
presence of these tie-off Oh.s enable the symmetric Oh. main components to
hold that orientation, which might be both stronger a bit and easier to loosen!?
Then, again, stiffish kernmantle climbing rope might not accede to taking the
jamming form so agreeably.
Znex: You can’t figure to dress your multi-Overhand into the crossing-w-wraps form
of the Strangle/Grapvevine? --btw, this seems to me to be a real question/issue with
anglers knots (the Uniknot, i.p.) as to what’s expected: they typically SHOW the
1-end-wraps-SPart form, but in instructions for setting this knot, imply or even
indicate that the transformation to the other form is expected–the image of the
tied knot though is an ambiguous scribble (nicely, e.g., Des Pawson’s book had
magnified photos of such knots). In any case, see the URLink above for how to
tie Derek’s form, which is presented there for the tie-off to the Swami, and also
for the Grapevine Bend; adding extra turns should be easily understood.
In any case, I recently saw someone replace the Grapevine bend with knots in
your Anchor-Hitch orientation, presumably to yield a more easily untied bend.
It should work well enough. Note that this orientation is asymmetrick, and so
could be done the other way 'round, SPart running through structure to coil
back before exiting as an eye leg.
NB: If you bring your end (blue) out BETWEEN the SPart’s initial turnn and
the tuck of it out through the coil(s)–i.e., last crossing of blue part/end w/black
is blue going OVER & done, you have made a good friction-gripping knot onto
the end, and have an adjustable, tensionable eye (knot form is Blake’s Hitch-like).
As with friction hitches in general (also other knots, more or less), YMMV depending
upon cordage.