This is how i look at any bight based knot/Bend, chasing the forces in electrical pressure, rather than tension pressure imagery. Naming them as High, Low and No voltages, w/arc and nip as conversion points/boundaries. i find this key to viewing Square family, Sheet Bends, Lapps, Surgeon’s etc.
These show similar ‘voltage’ patterns to Sheets, but then also bring forth the view by comparison of weave or not.
i assume when tying i want WE(Working End) to weave into and out of arc Turns as a default mnemonic shorthand. Meaning i don’t note if i am supposed to weave, just assume and simply note the exceptions that don’t. This lowers the tying memory overhead, but also gives a different view of the funcionality.
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Sheet Bends weave into and out of the arc/Turn of a passive bight with the active lock side.
About matching Lapp, does not weave, but rather pass other rope parts until serves around arc and then passes rope parts again, until a final single tuck to secure.
A tuck is as WE serves under an existing , therefore greater tension AND thus also greater rigidity rope part to me.
A weave is more of where WE pass over an existing rope part on host, that has tucks on either side.
Kind of like a linear answer to RT of 3arcs listed radially on host
weave gives a more 3arc rappel rack function, as a linear listed gauntlet of arcs
But still, to the same 3arc sciences have tried to show.
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With everything the same between tails same side forms of Sheet Bends and Lapps;
To weave or not, seems to be the single binary coin flip of determinant change defining between.
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Lapp proper not as secure, but not then locking as hard as Lapp.
Tail in or out argued as best or not for Sheet Bend;
BUT Round Turn (RT) instead of simple Turn for lock side is a game changer for both problems.
In case the skull and cross bones as like ABoK w/Danger Will Robinson warning is unfamiliar or forgotten:
60’s “Lost in Space” series, kinda about others that left the safety of the ground for whatever dangers
voice by famous announcer Dick Tufeld, Bill Mummy as Will, plagued by dangers and the Eddie Haskell-ish Dr. Smith
“Bight hitches”, I call 'em --using “open” (just
one bight end loaced) or “closed” (load both ; an eye).
You need to run this experiment to the next leve
–to “double” versions. There, the sheet bend gains
not so much (though one has other variations for this
(ABoK #488, i.p.!)), and the Lapp, plenty : slack security
and stability, and with forcible loosening by pulling the
tails apart to prise out some SPart, enuff to loosen further!
For me ‘Bight Hitches’ (guess we should not use any contractual form..) start with Bight_Hitch_0 of non-hitch of the SqauREef fam; where neither is a lock/hitch both are just the bight of matching forces, so no primary force not applied in lock of added hitch. To me the bight is as a locked slip, bight is the escapee and hitch the jailer. SquaREef has no jailer/lock, just 2 potential escapees.
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The solution is to use SquaREef as in Round Binding, so turns the pull from flat linear to 90degrees around half arc, changing the direction of the lock that is not working 90 degrees as do to accommodate antiBowline. And as with the changed direction of loading and lock in antiBowline, the SquaREef now locks with primary 220v raw alpha force where did not before. But is not greater over lesser, is of matching/matching locks to each other. In Sheet for unmatched Bend, we would always make the smaller/denser/stiffer side the lock. With SuaREef must be matching, so there is neither advantage nor disadvantage as each half locks.
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The all around clamping of RT 3arcs cures many things for us i think. Don’t need to worry about tail in or out of Sheet Bend/Bowlines and is not just a sincere arc pull with just minimal force back from SPart side to perform grab. RT upgrade gives real, compounding grip by comparison. For me corrects Lapp and Sheet/Bowl shortcomings when 1 Turn used in the lock. i mostly consider a single arc as a get by or purposeful pass of less buffered force to the next position. As from a VERY key lesson (again TYSM) of
ABoK Lesson#1669: “If the rope is weak and the hoist is heavy, a Round Turn on the Standing Part adds materially to the strength of the knot”
can be diminished by overly spiderly pre-fixxing to subsequent lower tension for performing this #1669 utility , if the pre-fix is of
ABoK Lesson#1720: “If a spar is small a RT is preferable to a single turn. It makes a stronger knot and dissipates the wear.”.
Drops the usable tension for the RT around SPart trick. So reduces the RT grip around SPart that performs more of a pull along SPart, that shearing across the support column of the SPart.
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i prefer Sheets w/RT lock, slipped for ease and the slip crosses self for extra bulk, similar if ever use Lapp.
i like grooming the RT lock long, pulling to set from BE backwards to maintain more of a long gauntlet of 3 arcs as like short rappel rack , like a linear RT theory, buffering to harshest deformity of the arc of change. And when really concerned even kinda extrude the 3arc longer linear into the bight side as well, setting backwards so it too locks down to gauntlet of 3 linear arc list pf softer deformity before the major deformity of the arc of conversion U back around. Only done that in a Sheet Bend actually, but would faithfully mirror ‘down’ to lesser Lapp. The Linear list of 3arcs also comes into play to upgrade SquaREef not in Sheet Bend direction, but rather to Surgeon’s etc.
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i kinda call this Sheet version with RT each end for gauntlet of 3 arcs rappel rack effect buffering force to the harsher 180 U turn radial arc from each end of pull a Slipped Double Bull Sheet(careful how you say that, but still more polite than bight hitch contraction..), because we came to call the twist to short 2 arc gauntlet of Bull Hitch a Bull nose if theory applied farther than Bull Hitch. This fully weaves into and out of the 180 U turn arc too. Extra swell arc from crossing of the BE slip is very purposeful and in fact might use it as a tightening crank to the ‘off’/Omega/secondary/post arc/110v side of that arc of conversion. This gives more deformity so more grip, after the first 2 pre-fixing arcs list, as then presents the greatest deformity of the arc in continued progression.
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But anyway, Lapp study is not isolated to Lapp for me, but is piece of puzzle position to this whole ‘fam’ . Just as SquaREef is puzzle piece that shows with neither side as lock, so is a ‘Bight Hitch’ of value:0 and appropriately in the list of these at array position _0 on that list..when not wearing horse blinders to limit peripheral range depth to myopic scope.
I don’t think this was mentioned in this fairly old thread, but I think that one useful application for the slipped Lap knot may be tying the string of gym pants as shown here: https://www.youtube.com/watch?v=3R0Lp86GEBk
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I tried it and its adjustability and the ability to ‘bind’ the waist seem to work well (I’m not sure how to do that with the regular sheet bend). BTW, are there other knots that would work even better for this purpose?
I know that the name is old, but; the word “Lapp” when used to refer to the Sami people is seen by many Sami as just as bad as the rightly infamous “N-word” is. When I grew up 50 years ago that was the word that was most often used to refer to the Sami in most of Sweden, but we live in an age when we can do better. Can we find a better name? Find the name in the Sami language[1]?
[1] I live 3 km from a Sami cultural center, I could check if they are able to answer that question.
Unfortunately the name in use has been around for quite a long time and whereas I agree that changing it is a good thing to do in the short to medium term this will probably have little effect. That said a short article in Knotting Matters as well as a post on this Forum will be a good start. When you can find a more appropriate name for the knot let us see what can be achieved.
I agree there. I have emailed the Sami language center, and when I get a response (and have time) I will both reply here and write a short article to Knotting Matters
The knot is documented since 1892 under various names (false weaver's bend, false sheet bend, English Bowline, Girdle Knot), and was used by various native cultures (America, Lapland, Africa, Australia).[3] The name Lap(p) knot stems from it having been used in Lapland to tie reindeer to a sled and for lanyards. The slipped Lapp knot is also shown in The Ashley Book of Knots as #1224, a nameless decorative bathrobe cord knot.
Lapland is a region in northern Finland where a lot of Saami people live. On the other hand Saami traditionally people live in Northern areas of Norway, Sweden and Russia, too, and all the areas constitute unofficial Saami land. I don’t know, if the knot has been used in Lapland especially much or originally, as it has been used elsewhere, too.
As for some use cases for the knot, slipped version thereof, you could tighten a cord easily around an object by it by pulling the bight, and both working ends simultaneously.