i found the knot i was looking for ..! an overhand-knots sinnet...

[alana]

has anyone ... seennit? 🙂
it is difficult to find a knot if you don't know the name,
so anyway,
the weave shape in 'the' plafond knot - what is that called?  - it is very alluring, 
i was after a(nother) knot that features it prominently, or completely,   
took 5 months of it sitting in my notes till i had a closer look at it,
took the long way round,
i found the plafond version of it, 
then reverse engineered it to find it is a simple-ish braid of overhand knots,
but tied in the crown direction.
could be new;
i will record a video if it hasn't been done yet

clover leaf corners also an option

guitar fingerboard - with to-scale fret spacing if you really really wanted to!

[alana]

what is this shape called? 
i have been calling it an 'aster',
but - not knowing my flowers - it is nothing like an aster flower.
it is 'a square (or diamond) with one end of each line overhanging the adjacent side.'
i couldn't find it in wingdings. or the internet
it's sort of the shape in and of the chinese crown knot .
my cousin says ninja star.
someone here will know!

anyway i really like the formation, as featuring in the 'plafond knot',
from two overhand knots being woven together. 

[alana]

i am on the lookout for such a braid or sennit with the beautiful-square-weave-shape on all four sides,
does it exist?,
the next holy grail,

for now i am happy with the 7Lx4B 2-pass cylinder, which has a diamond dot on each of 4 sides, 
drawing me to it like a moth to a lantern

maybe I'll have to learn how to tie using a mandrel for the next one up!
drawing me like mustard on a cat's tail

p.s re: the sennit
it is a four-strand braid,
i think

[KnotMe]

what is this shape called? 

I have also been looking for a name for that formation.  First I thought: it's the multiple person wrist handshake (https://www.shutterstock.com/image-photo/three-business-people-join-hand-together-523980463) there's got to be a name for that, right?  But there doesn't actually appear to be a name for that?  (https://history.stackexchange.com/questions/10186/does-the-forearm-grip-handshake-have-a-historical-basis)

Then, I thought, engineers should have a name for it, it's more or less a mechanical iris/circular shutter formation, no? (https://content.instructables.com/F83/KGLP/H3Z3V2IU/F83KGLPH3Z3V2IU.jpg), but I could not find a name for the shape.

[KnotMe]

has anyone ... seennit? 🙂

When I first read your post I thought I knew what you were asking for, but on second read I'm not so sure. 

In any case, what I thought you wanted was this

vertical crown knot.

There's also this "tumbling box" version

[alana]

KnotMeee, ya found it !

yes, it's almost the same ... his is better ... 😑
it's beautiful 😃
the vertical crown sinnet - and a channel all to itself -
Bill's got an extra twist step in it that keeps it square instead of the slightly rectangular shape i've tied,

i'll have to give it a go
it's the knot i was looking for ... plus comprehensively tied in a cross shape, neatly firmly tied, it looks great 😊

[alana]

I have also been looking for a name for that formation. 

no finds, cool, we get to name it..!

yes, it's irisy
pinwheel-ish
offset-something
the lines of cartons stacked on a pallet
two letter T's (?tesselated)
the handshake shape - sometimes a chair seat formed by two people locking hands
ninja star
the plafond knot aster
overhand knots weave
the vertical crown weave feature !
four pavers
have i seen that shape at the base (stand) of a christmas tree?
square iris
buttress square
buttress diamond

recently i have arranged toast on the tray like this to make it fit  🙂

[KnotMe]

I have also been looking for a name for that formation. 

no finds, cool, we get to name it..!

Personally, I want a name (set of names?) that is not just in the case of 4 parts, but any number...

yes, it's irisy
pinwheel-ish
offset-something
the lines of cartons stacked on a pallet
two letter T's (?tesselated)
the handshake shape - sometimes a chair seat formed by two people locking hands
ninja star
the plafond knot aster
overhand knots weave
the vertical crown weave feature !
four pavers

That reminds me I used to make that shape all the time when making a Lego chimney/tube

have i seen that shape at the base (stand) of a christmas tree?

absolutely, yes

square iris
buttress square
buttress diamond

recently i have arranged toast on the tray like this to make it fit  🙂

I remembered recently a talk about the flag of the Isle of Man (well, about symmetry and the flag was  an illustration of symmetry).  The name for the shape is "triskelion" or "trisekele" which is nice and distinct.  Moving up to 4, we avoid the swa/sauvastika issue with quadskelion (there are a few search hits for that and one for quadskele).  Absolutely nothing at all for penteskele or penteskelion.

What do you think, shall we claim this suffix? 

Upon a moment's reflection, this refers mostly to the arms and does not have the connotation of the shape in the middle?  But if we're claiming and repurposing we can add that to the definition.

skeliris! 

[alana]

having a stare at it, to me it's all about:
the T shapes,
the lines and outlines of the whatever it is being woven,
which is an overlapping of cord or camera iris 'plates' (what are they called)...
or lego that's butt-joined in a way that there's the space in the middle ...

the space in the middle is the main product of the particular overlapping / weaving / lego arrangement ...

so it seems like it's about:
the tees, and their radial or rotational arrangement, and that the T doesn't touch the centre point of the total formation - ?
(and i guess that's what i mean by 'offset')
which will make this shape-we're-talking-about different from a 'plus' sign;
a camera iris different from an asterisk

pics: camera iris,
arms seat,
a pallet-stacking chart shows the lego chimney!, but called 'the pinwheel' ...
the 3 hands handshake ...

[alana]

pic: 1982 commonwealth games logo 😊 *nostalgia*

[KnotMe]

so it seems like it's about:
the tees, and their radial or rotational arrangement, and that the T doesn't touch the centre point of the total formation - ?

you are right, of course.

my gut reaction to the camera iris with outlines on it was: "iris-wedge" which misses the "t"-ness of it all

most of the definitions for pinwheel are fixated on the children's toy, but this definition came up

a cogwheel whose teeth are formed by small pins projecting either axially or radially from the rim of the wheel.

on the google search page under the link from https://www.dictionary.com/browse/pinwheel, but strangely when you go to the link the word "cogwheel" isn't anywhere on the page.  they also have

a wheel having pins at right angles to its rim for engaging the teeth of a gear.

those "pinwheel"s are this, though

This, though https://www.splitcoaststampers.com/resources/tutorials/6sidedpinwheelcard/ is exactly the shape we are looking for.

Still, "pinwheel" does not necessarily carry with it the hole in the middle/t-shape characteristic with it https://www.alandacraft.com/2022/12/11/how-to-sew-a-hexagon-pinwheel-block/

It occured to me that a "spiral with a hole in the middle" is a "vortex".

At the moment I'm still pulling for "skele-iris" which I think carries with the the "skele" from "triskele" and "quadskele" as well as "skeleton" which is our "t" shape lines and "iris" from the camera shutter.... but maybe iriskele/irisskele/iriskelion? 

[alana]

ooh, vortex...

maybe, just like knots, a pile of different names can apply,
technical, descriptive,
typographical would be good,
whimsical;
and personal favourites will stick,

yeh i'm not convinced of 'pinwheel' either,

iris is pretty good, as it's got overlapping structure, like the weaving of cord,
but - downside - also homonym of the flower ... loss of specificity

basically, what is that weave pattern called?,
plain under, over, under weaving? 'weaving', i guess!
- oh it's right there in your avatar!

that coaster card is the shape!
looking at it, i wonder if it's 'about' an L shape, as much as it is about a T shape;
anyways...

vortex star,
cyclone ...
aha - a browse of 'cyclone symbol' shows our meteorological symbol is a 'p,d'...
others use a 6,9 or b,q symbol ...
you guys call them tornados, i think 
(hurricane, i should say)

so, it sort of exists in weather map typography
- apparently exists as an emoji  🌀 oh i found it !
...

[KnotMe]

ooh, vortex...

iris is pretty good, as it's got overlapping structure, like the weaving of cord,
but - downside - also homonym of the flower ... loss of specificity

as long as you are not coining a totally new word, there will always be some loss of specificity.

i like both vortex and iris as root words.  I also like the -skele, -skelion suffixes.

so, "vortex star" or "iriskele/iriskelion"

basically, what is that weave pattern called?,
plain under, over, under weaving? 'weaving', i guess!

I've seen scoubidou ppl call it the "box top weave" for when you're closing up a box without tape, one flap over the other until you tuck in the last flap

- oh it's right there in your avatar!

that coaster card is the shape!

yep

looking at it, i wonder if it's 'about' an L shape, as much as it is about a T shape;
anyways...

vortex star,
cyclone ...
aha - a browse of 'cyclone symbol' shows our meteorological symbol is a 'p,d'...
others use a 6,9 or b,q symbol ...
you guys call them tornados, i think 
(hurricane, i should say)

apparently cyclones and hurricanes are the same thing but in different parts of the world.  Tornados are much smaller than either cyclones or hurricanes.  Their meteorological symbol is boring and mostly looks like ][ but stretched out a little.

so, it sort of exists in weather map typography
- apparently exists as an emoji  🌀 oh i found it !
...

it probably won't show up, but there's all sorts of funky swirly unicode characters...
𖣥 (bamum letter phase c njeux)
𒅒 (cuneiform sign im squared)
𖣐 (bamum letter phase c ngom)
꥟ (rejang section mark)

[alana]

'box top weave' is a great description, 
and i always thought it was a groovy way of closing a box  glad to know the name for it now


so here we call them cyclones,
i understand they are tornadoes, but with water,
could be wrong,
it's been said that in Australia we don't get tornadoes,
but we probably do, inland, but no large population centres to damage;
in the desert i have seen what we call willy-willys,
wind funnels, and i have seen them like 5 feet across, kicking up dust (what else).
but a workmate says he has been knocked over by one, so it must've been pretty fast. 
and then last Christmas, on the gold coast, major coastal city,
a windstorm tore through at night, with no warning,
i think it is being called a tornado.

groovy with the unicode whirls,
can you write one?
of the vortex box top star shape! 

there are quite a few .svg images for 'ninja star',
but none quite like the simple box-top four-pointed star vortex  😊

[KnotMe]

'box top weave' is a great description, 
and i always thought it was a groovy way of closing a box  glad to know the name for it now


so here we call them cyclones, ...

as i understand it it's just a question of scale whirlwind (dust devil) -> tornado -> hurricane/cyclone, although I did just read that tornados originate in the clouds and a dust devil is ground based.

groovy with the unicode whirls,
can you write one?
of the vortex box top star shape! 

Not that I can find! 

there are quite a few .svg images for 'ninja star',
but none quite like the simple box-top four-pointed star vortex  😊

should be able to get some decent pictures out of the free tier of this https://iris-calculator.com/