I find the Gleipnir a little too gimmicky a construct - look ma no hands - don't quite trust it, it creeps, and I find it hard to draw tight. Kind of in the same category as the Sheep-shank...:-)
I like the method shown in the second video (the Girth hitch holding two tails tucked through it from opposite sides) - probably superior in every way to the Gleipnir...
There are quite secure variations of
"sheepshank", so too
might
"Gleipnir"--better generalized to
"Dahm's Floating Binders" as a class--
show itself to offer a variety of behaviors --some knots
easier to tie and others more sure of grip. IMO, though,
it's often best to tie off the binder somehow.
A main problem with the original is that tension into the
nipping/binding loop must come from pulling on ends
a full RT removed from that point --so, much friction
reduces one's tightening force into the nipping loop
(which, as both Xarax & I found, is best oriented
such that its ends come in AWAY from the bound
object (if indeed there is contact at this point;
nice thing is : "floating binder" binds rope-on-rope!),
and not against the object).
So, I looked for a way to have setting force more
directly/quickly feed into the nipping structure,
and thus discovered the general structure shown
with the particularity of a
larkshead in the video;
this might be a clove or perhaps better still just
a RT. I've used this often enough. (There might
be some gain of security in that the could-slip
tucked ends make right-angle turns through the
central nipping structure, rather than a more
straight-through path, as for a
constrictor.
As for the structure in Ashely of the
timber h. with RT
of the S.Part (#1669), that can be generalized to be
any eye knot with the RT in the eye --thus, binding
without need for contact to a surface. Now, used
qua binding structure, one needs to tie of a tightened
such arrangement, with maybe a simple Half-Hitch
(slipped) or overhand, or a HH put around the legs
of the structure like a
sheet bend.
--dl*
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