Author Topic: A source for creative knotting ?  (Read 2923 times)

nautile

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A source for creative knotting ?
« on: April 10, 2006, 02:00:35 PM »

I pointed some friends to
http://www.freewebtown.com/adrian/tmp/knot_icod_rope.jpg
other interesting thing though not knots on    http://groups.yahoo.com/group/Polytopia/message/1018

( another one here :http://marine.sci.hyogo-u.ac.jp/~hammer/title/014.html  by somebody else )

I contacted Adrian Rossiter who immediatly sent help : here is his answering mail ( with his permission )
I think that here is a source for new creative knotting

xxxxxxxxxxxxxxxxxxxxx

Hi Charles

On Mon, 10 Apr 2006, charles hamel wrote:

>> Second could you give me the diagram to make a :
>> Icosidodecahedron monkey fist


Cuboctahedron      http://freewebtown.com/adrian/tmp/knot_cubo_rope.jpg
Icosidodecahedron  http://freewebtown.com/adrian/tmp/knot_icod_rope.jpg

The icosidodecahedral knot is considerably harder to tie than
the cuboctahedral version. The cuboctahedral knot can easily be
tied by hand but I gave up trying to tie the icosidodecahedral
knot like this, and made a frame for it instead. The frame also
includes the weave of the knot, making it easy to get the
crossings right.

The frame looks like the top row of images here -

  http://hexdome.com/weaving/triaxial/spheres/more/index.php

I made the bands for my frame from card 35cm long (plus a
little extra for overlap) and 2cm wide. This made a tight
frame around 10cm diameter, which was a good size for the
rope I used in my knot.

Also, while the cuboctahedral knot can hold its shape the
icosidodecahedral version is too hollow and I was unable
to tighten it regularly. It probably needs to be tied
around a ball.

I call the knot icosidodecahedral because the loops follow
the edges of an icosidodecahedron. However, there is a
general method for constructing this sort of weave pattern
that derives this particular knot from an icosahedron

Here are some examples

  http://groups.yahoo.com/group/synergeo/message/26586

A few more here, and a description of the construction

  http://www.freewebtown.com/adrian/geom/830_woven_polys

The program to produce these weaves will be in the next
release of my Packinon programs, which will be v0.06 and
should be available for download by the end of April.

  http://packinon.sourceforge.net/

Please feel free to repost my message if it will be of
interest to other knot tyers.

Best wishes

Adrian.

xxxxxxxxxxxxxxxxx

Adrian thanks for the good work and for the sharing spirit.





Luc_PROUVEUR

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Re: A source for creative knotting ?
« Reply #1 on: April 17, 2006, 08:58:25 PM »
Bonsoir,

Yes it is.
All "polyèdres" (in french) can be covered.
I show them in Saint Malo during the "Journées européennes des amateurs de noeuds" and begin to write in "Sac de Noeuds" (sorry, it is in french) If somebody can translate to put it in Knotting Matters...
You can see them in the gallerie of the site web of IGKT France.

http://www.igktfrance.com/galerie_photo/thumbnails.php?album=5

Cordialement, Luc

Jimbo

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Re: A source for creative knotting ?
« Reply #2 on: April 17, 2006, 10:23:42 PM »
Hail and Howdy!

I'm not sure if this fits, but it is a source of creative knotting, if you want to stretch a little & do some "fixing up" on your own.

When I was a mere half-knot, there was a toy called "Spirograph".  No offense intended (though I'm sure it'll be taken), but in my copy of ABoOK, a lot of Ashley's drawings look (to my old eyes) like scribbles...  Which reminded me of my youth...

Well, a family project called for a clock surround (to mount a clock in a towel ring for the in-laws' bathroom), and this ball of hemp yarn "spoke to me" (no, I didn't set it on fire first!!) ;) so I imagined that a 12B THK would yield one B per hour, which would fit a clock face.  So how many "Leads"??  Not so many as to crowd the clock, but enough to fill an inch or so...  What to do, what to do?

Well, it really is a small world, after all!!

Some brilliant, bored ADHD candidates have written "Spirograph" ("SG") applets for the internet!!

So what, who cares??

Well, what is a THK but a simple SG drawing, realized in cordage??  (As an aside:  The SG demonstrates that even intensely bizzarre THKs can eventually be tied with one cord!)  So I twiddled, fiddled, and tweaked the parameters until I had (finally!!!) worked out my 12B and (IIRC) ~5L!  Yaay!  Well, I had to open it in Pain Shoppe to mark the  "GozUnders" and "GozOvers", which took almost as long, but the "hard part" was done!!

Plus, marking the crossings gave me the reason to pay careful attention to every aspect of the knot before I even picked up the cordage, which was invaluable in getting the THK tied, faired & fitted to its place between the clock & the towel ring where it's mounted.

So...  To summarize:
WordSmith's SG is very interactive for idle speculation.
David P. Little has one better suited to using the [Print Scrn] button in order to get the result into an image-editing program.  I used the WordSmith one to "brainstorm" until I got close, then fine-tuned the knot in the David Little one.

The link I gave in the top 2nd paragraph should expand even the narrowest horizons for all to enjoy!

So here's hoping all find something to enjoy there!!

Jimbo
(PS: The mother-in-law loves the clock, the knot, and all.  Joy and happiness prevails in Jimbo-ville.)
Thank you all, for everything.  As of 6/6/6, I have changed my password to a random string (which I forgot), thereby assuring that anyone posting as "Jimbo" in the future will NOT be me.  Good luck!!!