Yet, another midline eyeknot

[Kost_Greg]

Hi Ychan, it's good that you have included the interlinked configuration as well, providing a compehensive picture of these structures.

The "Beta", butterfly-ish variation, although it looks more compact, in Mobius, crossed-line style, i believe it blocks the access to the figure-9 collar, therefore, i also agree with your preference to the other one.

Afterall, what's the point of inducing additional complexity to 1053, which would probably render the untying situation, more challenging than the parent knot?

On the contrary, at the february structure, the 9-collar is completely accessible, with no direct linkage to SParts, and moreover, it operates as a blocking component against the distancing developed between the two non-interlinked overhands of false butterfly, holding them close to one other.

To see what i mean, try to form the figure nine, this time from the right side of the knot, incorporating an S-half hitch.

You will rather uncover a knot, not so stable, as the one with the Z-half hitch, that you have very smartly intergrated  from the left side of the original knot.

One other interesting aspect is, that if the double splayed loop, bowline version is obtained from the original, inline, source knot, this figure-9 form, is transformed to Alpineer's nipping structure.

[Kost_Greg]

Moving to more conventional, hybrid, butterfly forms that synthesize interlinked figure eights and overhands, i have attached the precedent state of this form in first image, just before the reeving of the central bight through both interlinked loops.

Note 1: The right Z loop is twisted, and gets the crossing knot state, before the reeving, for the figure eight to be materialized.

Note 2: If the left S loop is twisted, one might expect a geometrically different result.

As i have explained in previous replies, the hybrid form, (which comes from the previous stage), is subjected to some core modifications, whereon the figure eight is flipped and the eye legs swap positions as illustated in second image.

Finally, the overhand, eye leg continuation, is extended, forming a bight, which in sequence is being folded under the nub, with the finishing reeving of the eye down through this bight.(third image, loose form).

In my view, despite the complexity, this is another interesting mode to interlace figure eight with overhand components, in butterfly-ish style to produce stable, yet jam-safe, midline knot structures.

Looking for a simple tying method that leads directly to third knot, bypassing the intervening stages.

[Kost_Greg]

Last, but not least at this series of knots is the one that points directly to the butterfly Knot.

Perhaps i should have started with this one, as the primary profile in this group of knots, nonetheless, i have mostly favoured the hybrid forms because their interlinked figure eight components, appear to form more pliable core nubs, compared to plain ,raw, overhands.

However, if someone wishes to improve butterfly's jamming profile at about 50% max (theoretically, by leaving only one overhand in action), he does have the option to put this specific profile to the test.

About the tying method, i shall join hands with Alan Lee and follow his tying procedure when forming his inline link bowline, just simply adding an S half hitch at the left SP continuation, as shown in first image mat (three times twist and folding under the main line is the initial mat creation, one more twist compared to the original butterfly method).

Note 1: Remove the collar that encircles the eye legs, in order to materialize the butterfly knot.

Note 2: If you wish to get rid of the remnant overhand, remove the first, left SP HH, and allow inline Lee's link bowline to take on form.   

[Kost_Greg]

This reply is about inline knot formation with a toggle mechanism, that's tailored to butterfly tying method.

First stage, (first image) is the well known, precedent butterfly mat, with the two, different polarity, interlinked loops, just before the final, central bight reeving.

1. Twist the right (Z) loop, anti-clockwise and turn it into the bight state, shown in second image mat.

2. Pass the central bight through this formation in the following order, over, under, under, over.

This is another, butterfly oriented, TIB tying method for the first knot of this thread.

[Kost_Greg]

How about inducing a clockwise twist, at the left, S loop component of the previous pre-stage, of the butterfly knot?

Such action would shape the first image mat scheme, while the toggling action, would push the central bight to be passed under the left bight, in exactly the previously described order (over, under, under, over), generating the fully featured profile of the next two images.

While this knot's response to BTL loading appears to lack the stability and the compactness of the previous knot ar reply#93, it is clear that the eye loading profile outweighs the previous one, from a jam resistance point of view.

Although both knots feature a resemblance in their structural topology and construction (no overhands), their jamming profiles appear to diverge, with the latter being more pliable than the the former despite its strange appearance.

PS: Siriuso would be pleased to find out that one more twist at the left component, would form the Z to Z  mat, while toggling the central bight in exactly the same fashion as previously, the Mantis loop would take on form.

However, i think i shall insist on the pliability of the second nub at this reply.

[Kost_Greg]

Sheepshank variation

As shown in first image's initial configuration, the first two loops are of same (S) polarity while the distinction, compared to a conventional sheepshank, lies to the third loop which is formed with inversed (Z) polarity.

Obviously, the left part of the middle loop is threaded down through the left loop, while the right part of the middle loop is threaded down through the right loop.

This sheepshank variant appears to maintain a more stable form when bi-axially through loaded, with the two sheepshank bights (the alleged damaged part of the rope) in a vertical axial alignment.

Xarax has been there before, because his sheepshank bowline is formed by pushing one bight through the other.

https://forum.igkt.net/index.php?topic=4680.msg30254#msg30254

[alanleeknots]

      Hi Greg, Yes, this is an improved version of sheepshank. Great work. I like it.
                      alanleeknots.

[Kost_Greg]

Thank you Alan for your feedback.

I'll have to point out that even this apparently more stable sheepshank, is always a sheepshank, so one has to be very cautious when using it.