Here are photos of a new instance of a jammed Ashley's bend joining cords of two colors, as promised.
Well, in this case --in the photos where it shows clearly--,
one can see that you have mis-tied the knot, per seeking
a non-jamming version, as did Inkanyezi.
Please follow the tying I tried to emphasize several times,
and highlight with yellow-roped *finishing path* for the
blue rope into laid rope overhand.
What we SHOULD be seeing in your jammed knots, were
they tied as above, the brown cord drawing the white tail
and vice versa, twisting them ever more securely. Instead,
we see the opposite (images #2 & esp. #3 are clear). Note
in #3 how the jamming mechanism --which, again, can be
exactly desired in many common cases that won't see the
extreme loading of this jam test-- is laid bare: the white collar
(this one more clearly seen) has been brought up
aroundthe knot body, and thus can tighten around that and its own
SPart --there is only about 1/4 of its compressed width that
extends beyond the body. This surrounding of the body is
helped by the proximate location of the tail's tuck --it is right
there beside its own SPart, whereas were the knot dressed
to resist jamming, it would be on the other side, and thus
the collar would've had much of the body to impede it.
Further to this, setting the collars tighter (less material in them)
is a stronger assurance against this surround-the-body jamming
from occurring; what is left might be pinch-of-SPart-by-bight
jamming, such as can be found in even a bowline. (I have
now, e.g., some bowlines found in beachcombed line of
about 5/8" laid polyDAC (PP&PES) line, where one can see
taughter line on the knot side of the collar than outside of
it; with cold fingers, though, I was still able to push back
the collar over the slackened-thicker SPart and loosen one
of the bowlines --the other remains, for photo-documenting.
To this point of supposed jamming, I long ago posted images
of the properly tied (to resist) #1452 in the thread
/igkt.net/sm/index.php?topic=1446.0of a small cord under great strain than it should probably
see, yet leaving a knot that is able to be loosened & untied
fairly easily. Look at the upper image of the vertically aligned
white marine kernmantle cord; the upper SPart's tail is the
one point up and lying behind/under the other --a position
it has been drawn/twisted to by the heavy loading. The
entry to this tail's tuck is plainly visible slighty lower then
knot-center, and well removed from its own SPart.
Contrast this with the image #3 above, where the similar
tail's tuck is behind the other (as viewed) and near its
SPart, and facilitating the surround-body state of the collar.
- - - - - - - - - - - - - -
Is it impolite to ask why the points just made above about
distinct versions of "#1452" have been ignored? Even in
this thread, where the issue is joined again, and I have put
a very clear, BIG-ropes image of how to tie the knot, we are
given again the naysaying "it tends to jam" assertion?
This is something everyone should be wondering about.If one follows bad tying advice and so on, well, yes, bad
things can happen; and if one can't be bothered with fine
points about a knot then maybe it should be skipped, maybe
... Velcro will do. Those are fair points to raise on general
recommendations; but not on this forum about
particularknots by people aspiring to knotty knowledge!
Ashley does a poor job in presenting --and maybe we can infer:
understanding-- #1452, as do other knots-books authors, it seems.
The non-jamming version was what I discovered for myself long ago
(1977-12-06), fiddling with
carrick bend, butterfly knot, SmitHunter's(my "#1"!), &
shakehands --other interlocked-overhands knots
(and with such poor literature research as to find it in Ashley only six
years later!)-: I imagined names "Dragonfly" & "Damselfly" to join
them to the fabled butterfly. And I was happy to find the nicely
non-jamming, secure
#1408, which I called "Butterfly Bend" then,
given its likeness --but with symmetry!-- to the Butterfly (of which
I'd heard about from an older rockclimbing acquaintance but took
some time to finally see). Only rather recently (last decade?) did I
look into the effects & benefits of dressing #1452 in other ways.
Xarax's presentation more obscures than highlights the aspects
of the versions. In having each overhand so exploded and nearly
circumscribing the other --in contrast to more pulling them resp.
left & right, exposing the parts that become collars-- he aims for
other aspects of the knots with this sort of overlay. My big-ropes
1st image aims to highlight the part of an overhand "pretzel" where
the "spine" is opened and into which
spot both the opposite
S.Part *dives* and from which its tail emeges --one focal point!
And this cannot be highlighted in those presentations (e.g.,
"Animated
Knots", by Grog) in which the knot is formed by reciprocal advances:
no, there needs to be the completed 1st overahand basis into which
one reeves by prescription just so (for whichever version of #1452,
or in other ways for other of these knots). Neither is
C.L.Day'swhiz-bang tying --much replicated-- helpful; indeed, I see now
that his completed/set knot is
badly dressed! egadz
There is yet
a third dressing of #1452 to be shown, in which the
crossing point of the collars is thrust up into the knot, making
for a rather harder bend of SParts entering the collar, and a
fatter central nipping/crunching area. In this way, it more
resembles the
carrick bend.--dl*
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