





Date: Thu, 8 Apr 93 17:46:00 PDT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re: Viva Origami

>
> Incidentally, Viva Origami is in Japanese.  That may or may not pose a problem
> with putting it on an English list.  I know I've been having problems
> translating _Spirals_ for the list, since my contact with the Japanese teacher
> has lessened...                 --*ACPQ*--
>
Thanks for the observation. What I have done with other non-English books
is put a speculated generic title in parantheses. Most of the searches that
have been of interest have hinged on the classification field.
For example, an ostrich is pictured on page 50 of  Mr. Yoshizawa's book,
Dukuhon II.
The diagrams suggest a ostrich so the title entry is (ostrich) but the
classisfication is 'bird'.

I understand 'Viva Origami' is a collection of animals by Kasahara (?).
v'ann






Date: Fri, 9 Apr 93 13:38:36 CDT
From: bartlone@last.med.ge.com (Mike Bartolone 5-4266)
Subject: A second try..

I didn't get any responses the first time I tried this, but I'll give
it one more shot..

Back in November or early December I taught the 4th graders at my sons'
elementary school how to fold cranes (and a few other things). The children
had just read the story of Sadako and the Thousand Paper Cranes. They are
now attempting to fold 1000 cranes (not doing too bad either), and would
like to know who we should contact, about how and where we should send these,
so they will be in Peace Park for Peace Day. Does any kind folder have
an answer?
       Mike Bartolone






Date: 13 Apr 1993 10:27:31 -0500
From: Philip Craig Chapman-Bell <pcbell@english.umass.edu>
Subject: Origami and Fractals

Hi, all and sundry,
 I was just asking Bob Roos if he knew of anyone working on origami and
fractals, when it occured to me that question could more appropriately be sent
to the list.
 Is anyone working on origami and fractals?  If so, I'd be interested to
know what's been discovered.
 Philip Craig Chapman-Bell
 pcbell@english.umass.edu






Date: 13 Apr 93 11:18 -0700
From: Joseph Wu <jwu@cs.ubc.ca>
Subject: Re:Origami and Fractals

>Hi, all and sundry,
> I was just asking Bob Roos if he knew of anyone working on origami and
>fractals, when it occured to me that question could more appropriately be sent
>to the list.
> Is anyone working on origami and fractals?  If so, I'd be interested to
>know what's been discovered.

Peter Engel's _Folding_The_Universe_ talks about origami and fractals in
a fair amount of detail. It is well worth reading.

Also, I have done a few models that exhibit some "fractal-ness". The
simplest is a folding pattern that transforms a flat piece of paper
into a cylinder using a specific creasing pattern. By recursively
subdividing the pattern, you achieve a better approximation to the
cylinder. The pattern consists of valley folding a piece of paper into
eights (and then the next level will be sixteenths, etc.) and then
mountain folding the paper into sixteenths along the diagonals (i.e.
in both directions). The paper will then tend to curl in one direction
and can be collapsed into a cylinder. If this isn't clear, I'll try
to put together a diagram later...

Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?






Date: Tue, 13 Apr 93 14:58:39 PDT
From: Comet <COMET@us.oracle.com>
Subject: Re:Origami and Fractals

Philip Craig Chapman-Bell <pcbell@english.umass.edu> on APR-13-93 08:48:19 wrote
> Is anyone working on origami and fractals?  If so, I'd be interested to know
> what's been discovered.

Joseph Wu <jwu@cs.ubc.ca> on APR-13-93 11:29:10 responded
> Peter Engel's _Folding_The_Universe_ talks about origami and fractals in a
> fair amount of detail. It is well worth reading.
>
> Also, I have done a few models that exhibit some "fractal-ness". The simplest
> is a folding pattern that transforms a flat piece of paper into a cylinder
> using a specific creasing pattern. By recursively subdividing the pattern, you
> achieve a better approximation to the cylinder. The pattern consists of valley
> folding a piece of paper into eights (and then the next level will be
> sixteenths, etc.) and then mountain folding the paper into sixteenths along
> the diagonals (i.e. in both directions). The paper will then tend to curl in
> one direction and can be collapsed into a cylinder. If this isn't clear, I'll
> try to put together a diagram later...

Joseph, your description IS clear, but it sounds more like a hyperboloid of
one sheet than a cylinder...  I'll have to fold one and see what happens.  =D
I don't see the fractal nature of this converging sequence of models;
where is the invariance under difference of SCALE?

I've folded many fractals, even before I ever heard the word, about 20 years
ago, such as the blintzed blintzed blintzed... series.  Since I rediscovered
them via Mandelbrot, I've considered folding some of the members of the Julia
set. However, I am not yet well enough versed in the mathematics/concepts to
easily bring to mind a geometrically recursive formulation.  *sigh*  Binary
trees and Barnsley Ferns and Iterated Function System (IFS) fractals in
general can be folded in a straightforward manner using modular origami
techniques and graduated pieces of paper.  If your school of origami *demands*
ONE SHEET, then I recommend "Origami for the Coinnoseur" [my bad sp!] whose
seashells show the same structure on a variety of scales.

--------                        ____________
Comet <comet@us.oracle.com>    /\  _________\   Fantasy Origami Lit. assignment
Oort Cloud                     \ \ \______  /
437 XESsex Way                  \ \ \bi/ / /    "Folding the Last Unicorn"
Belmont, CA  94002-2757          \ \ \/ / /          by Peter S. Engel
(415)593-0500                     \ \/ / /
                                   \  / /
                                    \/_/






Date: 13 Apr 93 16:52 -0700
From: Joseph Wu <jwu@cs.ubc.ca>
Subject: Re:Origami and Fractals

>Joseph, your description IS clear, but it sounds more like a hyperboloid of
>one sheet than a cylinder...  I'll have to fold one and see what happens.  =D
>I don't see the fractal nature of this converging sequence of models;
>where is the invariance under difference of SCALE?

Obviously *NOT* clear! 8) I know the hyperboloid of one sheet--nifty model!
But that is not what I mean. I'll attempt a diagram here:

._______________________.
|\ | /|\ | /|\ | /|\ | /|
| \|/ | \|/ | \|/ | \|/ |
| /|\ | /|\ | /|\ | /|\ |   All of the vertical lines are valley
|/ | \|/ | \|/ | \|/ | \|   folds, while all of the diagonal lines
|\ | /|\ | /|\ | /|\ | /|   are mountain folds.
| \|/ | \|/ | \|/ | \|/ |
| /|\ | /|\ | /|\ | /|\ |
|/ | \|/ | \|/ | \|/ | \|
|\ | /|\ | /|\ | /|\ | /|
| \|/ | \|/ | \|/ | \|/ |
| /|\ | /|\ | /|\ | /|\ |
|/ | \|/ | \|/ | \|/ | \|
|\ | /|\ | /|\ | /|\ | /|
| \|/ | \|/ | \|/ | \|/ |
| /|\ | /|\ | /|\ | /|\ |
|/ | \|/ | \|/ | \|/ | \|
._______________________.

By subdividing further (i.e., by folding each vertical strip and each
diagonal strip in half), you get a tighter pattern that is a scaled-down
version of the previous level of subdivision, and that is a better
approximation of a continuous smooth surface (the cylinder). That is
why I claim some degree of "fractal-ness" for this sequence of models.

Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?






Date: 14 Apr 93 11:18 -0700
From: Joseph Wu <jwu@cs.ubc.ca>
Subject: Re:Origami and Fractals

Oh, what an idiot I am! 8) I really should have told you that the folds are
meant to be unfolded so as to create a crease pattern on the surface. This
pattern consists of vertical valley-fold creases and diagonal mountain-fold
creases. The entire square piece of paper will then tend to curl in one
direction into a cylinder, with the top edge of the paper touching the
bottom edge of the paper. The vertical lines form rings that go around the
circumference of the cylinder.

As for the model being a fractal, no it is not what is commonly considered
a fractal. However, as I've already noted, it does exhibit some fractal
properties (self-similarity at different scales, etc.). I could also argue
that this model fits a stricter definition of "fractal" because it has a
fractional dimension somewhere between two and three.

Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?






Date: Fri, 16 Apr 1993 23:09:51 -0400 (EDT)
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: Re:  PostScript diagram

I learned a different flapping bird on the number 1 subway in NYC
on my way uptown one night from someone who saw me folding with some
2" paper.  You've probably all seen it.

I met some people at a small party, and when I made it for them,
they were really interested!  I promised them to send them instructions,
and since we are all on the 'net I decided to make a nice diagram
for them in PostScript, and e-mail it to them.  I used a program
called 'tgif' to do the drawing on my Sun.

Would anybody care to take a look, and comment on my diagramming,
and general layout?  It's about a 44K PostScript file.

-A.

Andrew Anselmo
Dept. of Mechanical Engineering SUNY Stony Brook
Stony Brook, NY 11794
(516)-632-8303
Primary: anselmo@thermsa.eng.sunysb.edu  Secondary:apa1@cunixf.cc.columbia.edu






Date: Sun, 18 Apr 93 17:08:14 EDT
From: babani@cs.Buffalo.EDU (Rusty Babani)
Subject: Re:  PostScript diagram

Andrew P. Anselmo stated in the last message:
>From origami-l@nstn.ns.ca Fri Apr 16 23:21:38 1993
>To: origami-l@nstn.ns.ca (Origami Interest Group)
>Subject: Re:  PostScript diagram
>From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)

>Would anybody care to take a look, and comment on my diagramming,
>and general layout?  It's about a 44K PostScript file.

I wouldn't mind looking at it.  I can print postscript at the unversity
printers here.  My address is babani@cs.buffalo.edu

Rusty

+==== Internet: babani@cs.buffalo.edu ===+======== Amateur-Radio: N2LYC ======+
!      Bitnet: V078LNGT@ubvms.BITNET     |        UUCP: rutgers!ub!babani     !
! Alternate: an173@cleveland.freenet.edu | Plsure dpnds on the othrs prmison. !
+==  PGP key available. (If you don't know what a PGP key is... find out!)  ==+






Date: 21 Apr 93 09:31:55 GMT+0100
From: "Maarten.J.van.Gelder" <MAARTEN@RC.RUG.NL>
Subject: Re:  PostScript diagram

Hello Andrew,

I printed the flapping bird.

m>I learned a different flapping bird on the number 1 subway in NYC
m>on my way uptown one night from someone who saw me folding with some
m>2" paper.  You've probably all seen it.
m>
m>I met some people at a small party, and when I made it for them,
m>they were really interested!  I promised them to send them instructions,
m>and since we are all on the 'net I decided to make a nice diagram
m>for them in PostScript, and e-mail it to them.  I used a program
m>called 'tgif' to do the drawing on my Sun.
m>
m>Would anybody care to take a look, and comment on my diagramming,
m>and general layout?  It's about a 44K PostScript file.

The drawings are neat.
I suppose the size of the PostScript file is determined by your drawing
package. My private program ORIDRAW makes far more smaller files for about
the same amount of diagrams.

This flapping bird resembles the Fluttering pheasant of Kunihiko Kasahara
very much. It is in his book Origami Omnibus (1988). The only difference is
in diagram 4 (and 9 of course). The extra valley folds in the right side (not
drawn in diagram 3) are just 'interchanged': now one is from the lower
right point down, with Kasahara it is from the upper right point. Because of
this difference its tail is wider. The 'flapping' works the same.

I can put your PostScript file in the archives if you want. But I had rather
mention the name of Kasahara in it. Should I 'edit' the file for that? Or can
you do it and send me (private) a new version of the file?

Maarten van Gelder                                M.J.van.Gelder@RC.RUG.NL
Lichtboei 210                   Rekencentrum Rijksuniversiteit RuG
9732 JK  Groningen              Groningen
Holland                         Holland






Date: Wed, 21 Apr 93 16:17:57 PDT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re:  PostScript diagram

> Andrew and Maartin, et al,
>
>Andrew wrote:
>m>I learned a different flapping bird on the number 1 subway in NYC
>m>on my way uptown one night from someone who saw me folding with some
>m>2" paper.  You've probably all seen it.
>
>and Maartin wrote:
>The drawings are neat....
>
>This flapping bird resembles the Fluttering pheasant of Kunihiko Kasahara
>very much. It is in his book Origami Omnibus (1988). The only difference is
>in diagram 4 (and 9 of course). The extra valley folds in the right side (not
>drawn in diagram 3) are just 'interchanged': now one is from the lower
>right point down, with Kasahara it is from the upper right point. Because of
>this difference its tail is wider. The 'flapping' works the same.
>

Low and behold... Sam Randlett published this model in 1961 in
The Art of Origami, page 126.  Sam attributes the model to John Nordquist.

This reminds me of the discussion a few years back on originality and
Robert Lang observed that when there are only a few folds to be made, the
chance of re-creation [my word] is high.

Origami is a 'world folk art' and perhaps part of it's beauty is that
given a certain set of experiences, people of dissimilar cultures will
come to the same conclusion: flapping bird.

It is a delightful model and thanks, Andrew for the clear diagrams.

-v'ann-                             1828 Dora Drive
                                    Cardiff-by-the-Sea, CA 92007
vann@andataco.com                   (619) 753-9623






Date: 22 Apr 93 09:51:46 GMT+0100
From: "Maarten.J.van.Gelder" <MAARTEN@RC.RUG.NL>
Subject: Re:  Flapping bird

V'Ann and Andrew,

Andrew sent me a revised PostScript file of the flapping bird with the name
of Kasahara in it. I edited it to state:

   This model is found independently by different people.

In this form it is in the archives now.

In the OSN (Origami Societeit Nederland) we have a special commitee handling
the models sent by members. We ask the person who sent it to fill in a form.
In the form we ask for the author, source (book, magazine), permission for
publication, etcetera. We also try to see if the model is new. This is a very
hard problem. Sometimes you have never seen the model, but it was in a book
you never read.
That is one of the reasons we wanted to set up a model database.

Maarten van Gelder                                M.J.van.Gelder@RC.RUG.NL
Lichtboei 210                   Rekencentrum Rijksuniversiteit RuG
9732 JK  Groningen              Groningen
Holland                         Holland






Date: Thu, 22 Apr 1993 22:40:37 +0800 (PST)
From: Collin Forbes <collinf@uidaho.edu>
Subject: Re: Postscript diagrams

Even tho' it was an outrageous waste of bandwidth, I appreciated the
postscript diagram of the flapping bird.  For a long time I've been just a
passive member of the origami list, not really into folding (but I like
making things out of paper) but watching the conversations.  On a lark I
printed the postscript and folded my first models since the early 1980's
out of a photocopied sheet of my ethics notes cut to size.  My models don't
QUITE look like the diagrams (I can't get the head and neck to look right,
they sit INSIDE the body instead of outside like the diagram shows) but
they flap as advertised and were enjoyable to make.

Now I'm hooked and looking for more postscript diagrams to print and fold,
where are the archives kept, are they accessible through gopher?

Thanks again.

Collin Forbes --- collinf@crow.csrv.uidaho.edu, min@cardboard.mocw.id.us






Date: 29 Apr 1993 01:54:38 -0300 (ADT)
From: Comet <COMET@us.oracle.com>
Subject: Re: A message from Pam Rider

The name of the origami club here at Oracle is:  "Pho1drz".
Capitalized, it's "PH0LDRZ".  So yes, Pho1ding iz phun.
--------                        ____________
Comet <comet@us.oracle.com>    /\  _________\    Oracle Corporation
Technical Analyst              \ \ \______  /    500 Oracle Parkway
Midrange Computer Systems       \ \ \  / / /     Box 659312
Worldwide Technical Support      \ \ \/ / /      Redwood Shores, CA  94065-5041
                                  \ \/ / /
                                   \  / /
                                    \/_/






Date: Fri, 30 Apr 93 11:24:02 ADT
From: bruce <bruce@uxb.liverpool.ac.uk>
Subject: Tomoko Fuse's spirals book

Does anybody have an ISBN or any other details about Tomoko Fuse's book
containing only models with spirals in?  I saw a review in a BOS magazine a
little while ago, but nothing since.

Bruce              CMSR, University of Liverpool





Date: Tue, 11 May 93 02:52:15 ADT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re:  Tomoko Fuse's spirals book

Bruce: The models from Spirals just came in ... to the origami index...
the ISBN is listed as 480 87202-7.
-v'ann-





Date: Tue, 11 May 93 04:16:31 ADT
From: wbfst1@cislabs.pitt.edu
Subject: Re: Tomoko Fuse's spirals book

ooh, hey, this interests me.  Can you give me some more details on the
book and so forth?  or maybe tell me where I can get a copy of the
database that you have created..
Thanks

    | Information both the most powerful and most dangerous thing to have. |
                              | wbfst1@pitt.edu |





Date: Tue, 11 May 93 22:42:58 ADT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re: Tomoko Fuse's spirals book

>
> ooh, hey, this interests me.  Can you give me some more details on the
> book and so forth?  or maybe tell me where I can get a copy of the
> database that you have created..
> Thanks
>

The Origami Model Index will be available at the June Convention of
the Friends of the Origami Center of America...

I'm setting up the distribution now.  At one time in the planning, we
had hoped to let it 'live' in netlib. I'll know more about this later.

The bibliography was posted on netlib (I'll have to look up the address
again) last year.  It was a terrific way to retrieve info. I'll check
to see how it is.

We have 45 books documented (about 2200 models). We also have a list of
the models in the annual collections from the Friends Conventions (500
models, a list of the British Origami Societies newsletters and convention
books (I've forgotten how many), and expect to have Newsletters 30-42
of the Friends entered by then.

As far as a copy goes... I'm working on that.  It will be much more clear
within the next two weeks.

-v'ann-                             1828 Dora Drive
                                    Cardiff-by-the-Sea, CA 92007
vann@andataco.com                   (619) 753-9623





Date: Mon, 24 May 93 13:39:25 ADT
From: brad@cs.utexas.edu (blumenthal @ home with the armadillos)
Subject: Happy anniversary, everyone!

Five years ago yesterday, the following message was sent out:

>From brad Mon May 23 17:08:38 1988
Subject: origami adminstrivia

Welcome to the origami mailing list.  There's lots of origami related
stuff we can talk about, but this letter doesn't contain any of it.
We'll get the administrivia out of the way, and my next letter will
get us started on the real fun.

Followed quickly by this one:

>From brad Mon May 23 17:09:18 1988
Subject: so, let's get started....

Greetings,

One of the more popular topic suggestions that almost everyone
mentioned was an origami bibliography.  Since many of us seem to be
folding mostly from books, this sounds like a good way of finding out
what's out there.  So, here's my list to get things going.

We started out with five members, no automated mailers, and the
archive was somebody's Mail directory, but we were talking about
bibliographies even then.  The more things change....

Happy anniversary, y'all.

Take care,
brad





Date: Mon, 24 May 93 14:21:36 ADT
From: Paco Ojeda_Gonzalez <ffoogg@macmailgw.dfci.harvard.edu>
Subject: Origami and me

Mail*Link(r) SMTP               Origami and me
Well, in light of the list's 5-year anniversary, I'm inclined to share with you
my thoughts origami.

I remember starting to fold paper when I was 7 or 8. I don't remember if I
asked for my first origami book, or whether it was a present from my parents.
It was Robert Harbim's book. Through the years (I am now 30 years of age), I've
developed interest in other pastimes/sports/hobbies, ranging from racquetball
to gardening to skydiving. Most have come and gone. But origami is the one
thing that I have never stopped being interested in, and will probably do for
the rest of my life. I always keep in my briefcase, a small package of folding
paper, just in case I get in the mood!

Paco





Date: Mon, 24 May 93 14:54:31 ADT
From: bartlone@last.med.ge.com (Mike Bartolone 5-4266)
Subject: Origami on TV.

Does anyone else out there remember the Public Television show
called 'Origami'? The host was Samuel Randlett..I'd like to know
if it was broadcast nationally, internationally, or only locally.
It was on in the late 60's or early 70's. I'd also like to know if
anyone that knows of the show has any idea if it is available on
video tape?





Date: Mon, 24 May 93 15:44:55 ADT
From: Arnold Tubis <atu@physics.purdue.edu>

I have a copy of the booklet that was produced for Sam Randlett's TV series
on origami, which was aired about twenty five years ago. You may try to
obtain a copy from Sam, who now lives in Wauwatosa, WI.

                                                      Arnold Tubis, PHYSICS
                                                      Purdue University





Date: Mon, 31 May 93 02:09:23 ADT
From: douglas zander <zand0741@ee.uwm.edu>
Subject: I'm back!

   Hello all,

      I've been gone for a few months but I tried to catch up on the
  archives.  A few things I'd like to say if you don't mind. :-)
  Please excuse me for drudging these topics back up...
  1st: reqarding environments for origami from V'ann: here in Milwaukee
  a local public librarian is an origamist and he displays alot of his work
  on the top shelves of (unused) book racks at his place of work.  This is
  rather nice as it adds to the relaxed feeling and coziness of the library
  (its a smaller neighborhood library).  If I remember correctly, he displays
  some childrens' origami as well.
  2nd: someone had asked about techniques for treating paper to last longer
  and that these should be taught seperately at the convention.  Since I'm
  not able to attend the convention I won't opine on this directly, but I'm
  wondering whether or not there exist any books or guidelines on learning
  about how paper folds per se... let me explain, We know about all the
  basic folds and bases and what they are called and how to do them.  But
  does there exist any essays or works on the "geometry" or "mathematics"
  of the "science" of how paper can be folded?  For example, Peter Engel gives
  an amazing discovery in _Folding The Universe_ when he explicitly states
  about the 2^base {base=kite,fish,bird,frog) modules: and Maekawa's theory
  of using the number of equal sub angles to determine the basic form which
  can be evolved.  I think alot of origamists don't have a problem with
  geometry, but we may need a specific sub-set/sub-class of geometry for
  describing origami.  Just a wandering thought...
  3rd:  about pcbell's (sorry, don't have the full name on hand) question
  about fractal origami; I had brought this question up some time ago and had
  gotten absolutely no reply :-( glad to see it talked about recently.  I had
  worked on two fractally geometric origami last year, and determined some
  requirements I believe are required to classify origami as fractal.
  Unfortunately, I have a feeling there is a limit to the amount of fractal
  origami that can be produced (due to these very same requirements!)  Please
  note I'm talking about single, square paper models, not unit.  I'm not going
  into my discusion of this, if anyone is interested please feel free to email
  me directly.

  Douglas Zander
  zand0741@ee.uwm.edu





Date: Mon, 31 May 93 04:03:26 ADT
From: Comet <COMET@us.oracle.com>
Subject: The Geometry of Paper-Folding (Math)

Jeremy Shaffer (spelling?) is working on a thesis on this topic.
T. Sundara Row wrote a book "Geometric Exercises in Paper Folding", $3.95,
which I believe is offerred from the Friends of the Origami Center of America.
{ISBN 0-486-21594-6, republished by Dover Publications, Inc. in 1966,
originally published by The Open Court Publishing Company in 1905,
with introduction written in Madras, India, in 1893.}

Fractals possess self-similarity at a variety of scales.
The crease-pattern of multiply blintzed bases are fractal.
(Interpolated to infinity, one can derive the exact dimension of the fractal.)

Any connected fractal between dimensions 1 and 2 can be approximated by
creases on an ucut square.  Any connected fractal between dimensions 2 and 3
can be approximately transformed into an origami model.

Has anyone (besides me) made unit-origami based on Penrose tilings?

comet@oracle.com





Date: Mon, 31 May 93 12:49:44 ADT
From: Philip Craig Chapman-Bell <pcbell@english.umass.edu>
Subject: Dr. Miyura

Fellow folders:
        While channel-surfing just now, I found a segment on an
Australian science show which featured the work of a Dr. Miyura
(spelling may be wildly off) of Tokyo U., who had developed a fold of
great elegance and simplicity.  It was rows of parallelograms on a
piece of paper, very similar to that zigzag valleyfold-mountainfold
piece someone diagrammed on the list a couple months ago (does that
make any sense?  Florence Temko taught me this fold years ago, but I
can't remember any name for it).  Anyhow, Dr. Miyura's fold has the
interesting advantage of being able to fold up and back out flat,
rather like a road map.  In fact, an Italian company (Olivetti)
bought the idea for a map of Venice.  However, Dr. Miyura's intended
application was for a solar power array on a space station.
        I am sad to say I tuned in too late to get the interior angles
on the parallelograms.  Has anyone out there on the list heard of
this?  I'd be interested in any information on this you could provide.
        Later on the show, Dr. Miyura picked up a square and neatly
trisected an angle.  Has anyone seen this done?
        Thank you, I remain
                Philip Craig Chapman-Bell
                pcbell@english.umass.edu





Date: Wed, 2 Jun 93 00:56:01 ADT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re:  The Geometry of Paper-Folding (Math)

Hello, Hello!

About the exhibition that I mentioned earlier this year... and
several people sent me things to display... It has been extended through
July.  There are about 100-500 people visiting it a day.

about the geometry book by Sundara Row
The book contents reads:
the square
the equilateral triangle
squares and rectangles
the pentagon
the hexagon
the octagon
the nonagon
the decagon and dodecagon
the pentedecagon
series
polygons,
general principles
the conic sections
Miscellaneous curves.

The author notes that his intent is 'to revive old (geometry) lessons
and to have a peep into modern developments which although very interesting and
instructive, have been ignored by university teachers.'

He has numbered his paragraphes totaling 285 observations. His writing style
includes diagrams, and notation.

I am not a mathematician so it hasn't
helped me, but those who are matematicians and who can appreciate a page with
equations that included nested radical 2's and alphabet letters written to
the fifth power followed by a phrase... 'of course this is inadmissible,
....' Well,  ....maybe this will help the understanding of fractals or
the geometry of folding paper.

I really think that there is an audience for the geometry of paperfolding
as it relates to origami.  This is different in my view from the use
of paperfolding to prove geometric ideas.  John Smith in England has
developed a very impressive use of origami as a way to present elementary
mathematical ideas but again... the emphasis is on the mathematical
discipline.

Someday maybe someone who knows both worlds may find it worth thinking
through.  I think Kasahara may have something but the book I saw was
in Japanese.
later

-v'ann-                             1828 Dora Drive
                                    Cardiff-by-the-Sea, CA 92007
vann@andataco.com                   (619) 753-9623





Date: Wed, 2 Jun 93 14:31:49 ADT
From: FWOLFLINK@RCNVMS.RCN.MASS.EDU
Subject: snail model

I was in Utah this past week and attended a multicultural festival
where there was a booth filled with origami models.  One of them was
an amazing snail.  The model came from a Japanese book that had the
words "creative" and "origami" in the title.  Unfortunately, I couldn't
find out any more about it.

Anyone familiar with this?  Other sanil folds?

It included both the sanil and its shell.

I'd love a photocopy of the diagrams, if anyone can supply them.

fred wolflink
fwolflink@rcnvms.rcn.mass.edu





Date: Tue, 8 Jun 93 20:20:40 ADT
From: ACPQUINN@MIDD
Subject: RE:snail model

        There is a wonderful 2-d snail with a spiral-based shell in Tomoko
Fuse's new book, _Spirals_.  If it's the one you want, send me your address..
perhaps I'll even send you a few bonus models from that book...

                --ACPQ--





Date: Fri, 11 Jun 93 14:11:54 ADT
From: ACPQUINN@MIDD.BITNET
Subject: RE:Snail model

Yes indeedy...I will be at the convention, and, if you like, I'll bring a copy
of some stuff from _Spirals_... If I don't find you first, I'll be teaching my
jellyfish on Sunday (I think).  If you think you can fold the snail, I'd almost
guarantee you can fold the jellyfish.  Of course, If you can't come to my class,
   I may be hanging out with some of my friends from the Burlington Origami Grou
   p
(BOG).  Anyway, I'm late for class... See Ya at the Convetion!

        --ACPQ--





Date: Tue, 15 Jun 93 13:33:37 ADT
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: Re: repetitive motion problems with origami

I've resubscribed to this list, but have not gotten any new mail.  This
submission kicks off my re-introduction, and a test to see if I'm on the
list.

Now, about repetitive motion problems...

I was in Portugal for two weeks, to travel around, and to attend my friends
wedding.  While I was folding some flapping birds (the same ones that I
diagrammed) and some other simple origami pieces, my friend who was to be 
married said, "Oh, Andrew, I would *love* to be able to give each of my
guests one of those!  Can you *please* make some more?"  Not to refuse a
bride-to-be, I started folding.  About 70 pieces, of various types, in about
36 hours.  Mind you, I had been also folding randomly during my entire trip!
Because I have forced myself to fold in the air (helpful when you don't have
a dry, flat surface around), I actually wound up with a bit of a sore
index finger joint on my left hand, since I use my thumb and forefinger to
crease my folds.  Has anybody else run into this kind of problem?  I think
I can eliminate this in the future by a) using a flat surface when I must
mass-produce things and b) learn to crease a bit more carefully, without
putting my fingers in strange postitions.

BTW, the kids at the wedding loved the different pieces, especially the ones
that moved.  Does anyone have a reference for "action origami?"

-A.





Date: Tue, 15 Jun 93 13:46:46 ADT
From: PAVONE@polito.it
Subject: action origami

About Andrew Anselmo's question about where to find a reference for
action origami (flapping bird, jumping frog, etc.):
Right off the top of my head I can think of a section in Eric Kenneway's book
"Complete Origami".

I have a question too: Is there a book which is totally devoted to models
which are completed by blowing into them (such as the water bomb, or the
classical frog)? Such a book ("Blowing origami") would certainly be a
best-seller among children!!

Marco Pavone





Date: Wed, 16 Jun 93 22:40:54 ADT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re: repetitive motion problems with origami

When Maarten van Gelder gets back on line he will be able to comment
on the consequences of intense repetitive folding.

In Holland they have built a life size wall which took many hours
of attention. He commented about the impact on their wrists, elbow,
and fingers.

In Atlanta, Marth Mitchen needed to fold 1500 cranes quickly and found
that her hand cramped and took a week to 'relax'.  She recovered after
a short while of not folding.

-v'ann-                             1828 Dora Drive
                                    Cardiff-by-the-Sea, CA 92007
vann@andataco.com                   (619) 753-9623





Date: Wed, 16 Jun 93 22:42:58 ADT
From: andataco!vann@UCSD.EDU (V'Ann Cornelius)
Subject: Re: action origami

Tom Hull has a book coming out in January.
Eric Kenneway has a pamphlet published by the British Origami Society about
ten years ago.  Mostly commercial publishers require a 'mixed bag' for their
customers.

v'ann





Date: Thu, 17 Jun 1993 13:31:02 -0300 (ADT)
From: SPARKER@U.WASHINGTON.EDU
Subject: Hello

Hi!  My name is Susan Parker and I'm new to the list.  I'm a computer
programmer for the University of Washington.  I'm very partial to cranes.  I've
folded at least 10,000, usually in groups of 1000 for weddings.  I also makes
mobiles out of them for people.  I also enjoy making flowers and doing some of
the balls.  I've hooked several friends on origami.  We just did some for a
birthday cake last night.  I'm always on the lookout for new books, especially
ones that include more info on cranes (the folklore and variations on the fold)
as well as new flowers.  I have 25 or so books.  I'm always amazed to find them
in used book stores.  Hope to hear more from you all.

Sue





Date: Thu, 17 Jun 93 14:27:49 ADT
From: bruce <bruce@uxb.liverpool.ac.uk>
Subject: Flowers

> folded at least 10,000, usually in groups of 1000 for weddings.  I also makes
> mobiles out of them for people.  I also enjoy making flowers and doing some of
> the balls.  I've hooked several friends on origami.  We just did some for a
> birthday cake last night.  I'm always on the lookout for new books, especially
> ones that include more info on cranes (the folklore and variations on the fold)
> as well as new flowers.  I have 25 or so books.  I'm always amazed to find them
> in used book stores.  Hope to hear more from you all.
>
> Sue
>
10000?!  I'm impressed.

I'm a bit uninspired by most of the origami flowers I've seen.  There are a
few that are really good: Kawasaki's Rose, and the tulip and daffodil in
Paul Jackson's "Classic Origami" (I can't remember the inventors).  Can anyone
recommend particularly good flowers that I've not mentioned?  (It strikes me
that one ought to be able to make stunning modular flowers, but I've not seen
any---the tulip and daffodil use separate sheets for head and stem, but I'm
thinking of a modular bloom.)

Bruce              CMSR, University of Liverpool
Use PGP 2.2; make private email private!





Date: Thu, 17 Jun 93 14:50:50 ADT
From: hull@cs.uri.edu (Tom Hull)
Subject: Some replys and stuff

HellO!

Re: Action folds.
     V'Ann mentioned a book of mine (coming out in Jan '94) in regards to
action models. The relation is that this book, titled "Origami, Plain and
Simple", will have a chapter on action folds. This will include a talking
bird, a funky swan, a striking cobra, a greeting card that "kisses", a
somersaulting frog, and a throwing dart.
     Incidentally, the book is written by me, but the models were invented
(discovered?) by Bob Neale. Bob was sitting on all these simple folds for
15 years or so, and he HATES to diagram. I, on the other hand, am the
kind of person who enjoys alphabetizing record collections. So I took the
job of diagramming Bob's stuff. It'll be a simple to intermediate level
book, aimed at total beginners. Check it out.

Re: The Friend's '93 Convention.
     Whoa! I had a total blast at the convention (which was last weekend),
and even met many of YOU! Yes, there seemed to be a good turn-out by
origami-mailers.
     I was stricktly a volunteer this year, so I didn't take any classes.
But on the off-hours (which, in my opinios, make up the heart of these
conventions) I learned Jeremy Schaffer's Swiss-army knife (complete with
a knife, a screwdriver, a can-opener, and an awl), a stellated rhombic-
dodecahedron puzzle (six-piece) by some British guy, John Montroll's
chess board (which works very well!), a bunch of sliding modular rings,
and who knows what else.
     Let's see if I can remember any highlights.
     Toshi Akayiaaaa (sorry, I'm not getting his last neame right!) from
Toronto organized a group effort to fold a complete modular Tyrannasaurus
Rex skeleton (which was invented a by a fellow from Japan). At least
four different nationalities were represented in the folding, making
this an international dig. (I got to fold a tail-bone) The beast took
20 pieces of paper, and the result was about a yard long and a foot high.
It was way impressive! I believe that the Friends are selling copies
of the diagrams (which make a 40+ page book in themselves!) for anyone
interested.
     The novelty competition this year was definitely an experience. Last
year they had us racing to fold a sailboat with out FEET. This year, the
task was to fold a functioning flapping bird with one hand, and a water-
bomb with the other, at the SAME TIME! The first five people to finish
won, and i SWEAR I came really close!
     A personal highlight was getting to talk origami-math with Jeremy
Schaffer and Robert Lang. Mr. Lang has developed a computer program
that accepts as input a "stick-figure" (i.e., lines and points indicating
the general shape of an origami model. If you wanted to make a bug, you
might tell the program "7 points, one for the head, 6 for legs, and
each of these lengths...") and as output generates a rough-crease-pattern
that can be used as a starting point for constructing the model. Wild.
I hope to write a longer message on origami-math ideas in the future,
but we'll see...
     The exhibition this year was absolutely outstanding. Even Michael
Shall had a display (which he hasn't done in how long...?) of an origami
"fun house." Maarten (from Holland) brought his 7-foot tell arch and put
it up (with plenty of help). I particularly enjoyed seeing (again) the
work of Michael LaFosse, whose folding technique rivals that of Akira
Yoshizawa.
      Anyway, I hope everyone who went to the convention will write-up
their impressions. I'm certainly forgetting about plenty of what went
on. It was a cool groovy time.

     Later.
--------------------- Tom "carme diem?" Hull





Date: Thu, 17 Jun 93 15:08:14 ADT
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: Re: Hello

Hello Sue-

10,000 cranes?  Eeek!  And I thought folding 350 was bad.  How many cranes
can you produce in an hour?  Do you have repetitive motion disorders too?

Since we are now discussing high volume origami production, has anyone ever
heard, seen, or read about an origami folding *machine*?  This seems like
a pretty interesting problem.

-A.

 Andrew Anselmo / Department of Mechanical Engineering / SUNY Stony Brook
           anselmo@thermsa.eng.sunysb.edu





Date: Thu, 17 Jun 93 15:17:47 ADT
From: Paco Ojeda_Gonzalez <ffoogg@macmailgw.dfci.harvard.edu>
Subject: Re: Hello

Mail*Link(r) SMTP               RE>> Hello
> Since we are now discussing high volume origami production, has anyone
> ever heard, seen, or read about an origami folding *machine*?  This
> seems like a pretty interesting problem.

Hmmm... don't you think that the day somebody comes up with an origami folding
machine, origami will cease to be art?

Maybe I'm experiencing technology jealousy... After all, some machine might be
able to fold faster than me. But hitting a diagonal fold RIGHT on the very tip
of a corner? Nothing like a bunch of human fingers to do that!

Paco





Date: Thu, 17 Jun 93 16:08:20 ADT
From: Comet <COMET@us.oracle.com>
Subject: Origami Machine

>> From:  Andrew P. Anselmo <anselmo@thermsa.eng.sunysb.edu> on JUN-17-93
>> Since we are now discussing high volume origami production, has anyone
>> ever heard, seen, or read about an origami folding *machine*?  This
>> seems like a pretty interesting problem.
>
>From:  Paco Ojeda_Gonzalez  Sent: JUN-17-93 11:17:48
>Hmmm... don't you think that the day somebody comes up with an origami folding
>machine, origami will cease to be art?

The paper-folding origami machine has ALREADY been invented,
and is rumoured to be in use folding sample models for origami paper packs.
It has done as much to make origami cease to be art as the invention of
the camera has done to make painting/drawing cease to be art....
--------                        ____________
Comet <comet@us.oracle.com>    /\  _________\    Oracle Corporation
Technical Analyst              \ \ \______  /    500 Oracle Parkway
Midrange Computer Systems       \ \ \bi/ / /     Box 659312
Worldwide Technical Support      \ \ \/ / /      Redwood Shores, CA  94065-5041
                                  \ \/ / /
                                   \  / /        Views expressed are stored on
                                    \/_/         an Oracle7 database....





Date: Thu, 17 Jun 93 16:21:20 ADT
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: Re: Origami Machine

Any info on this machine?  It does seem that some models might be created
by machine, but I haven't seen any samples with a reverse fold in my origami
paper; usually just a 2 D swallow, and with (*gasp*) scissor cuts.

I wonder how this works... any ideas?

-a.





Date: Thu, 17 Jun 93 16:35:18 ADT
From: Joseph Wu <jwu@cs.ubc.ca>
Subject: Re:Flowers

>I'm a bit uninspired by most of the origami flowers I've seen.  There are a
>few that are really good: Kawasaki's Rose, and the tulip and daffodil in
>Paul Jackson's "Classic Origami" (I can't remember the inventors).  Can anyone
>recommend particularly good flowers that I've not mentioned?  (It strikes me
>that one ought to be able to make stunning modular flowers, but I've not seen
>any---the tulip and daffodil use separate sheets for head and stem, but I'm
>thinking of a modular bloom.)

Well, I make a mean orchid (with several variations). However, it will be a
pain to diagram (whenever I get around to diagramming it). It is based on a
blintzed frog base. I must agree with you that Kawasaki's rose is exquisite.
Every Valentines day, I get some lovesick friends of mind pestering me to
teach them how to make them for their girlfriends.

Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?





Date: Thu, 17 Jun 93 16:39:27 ADT
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: Re:Flowers

Does Kawasaki's rose have a stem too?   Where is the easiest place to find
the diagram?

-A.





Date: Thu, 17 Jun 93 16:53:08 ADT
From: Joseph Wu <jwu@cs.ubc.ca>
Subject: Re:Flowers

>Does Kawasaki's rose have a stem too?   Where is the easiest place to find
>the diagram?

Kawasaki's rose has no stem, although I have developed such a beastie so
that the rose looks complete. The place to find the rose is in Kunihiko
Kasahara's book, _Origami_for_the_Connoisseur_.

Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?





Date: Thu, 17 Jun 93 17:02:23 ADT
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: Re:Flowers; stem for Kawasaki's rose

I *thought* I knew that rose!  I've created a stem for the rose as well, so
it looks complete too!  Maybe (as Engel has observed), our stems may have
evolved to be the same, since the requirements are similar.  Mine is simple;
I'll try to diagram it soon.  It attaches to the back of Kawasaki's rose
by the four folds which exist there (sort of a clip-on arrangement).
Has anyone else besides Joseph Wu made a stem for Kawasaki's rose?

-A.

Andrew Anselmo
Dept. of Mechanical Engineering SUNY Stony Brook
Stony Brook, NY 11794
(516)-632-8303
Primary: anselmo@thermsa.eng.sunysb.edu  Secondary:apa1@cunixf.cc.columbia.edu





Date: Thu, 17 Jun 93 17:29:27 ADT
From: anselmo@thermsa.eng.sunysb.edu (Andrew P. Anselmo)
Subject: stem for Kawasaki's rose

If anyone wants a quick PostScript diagram (13K) of the stem I've created for
Kawasaki's rose, let me know.  As always, feedback is appreciated.

-A.

Andrew Anselmo
Dept. of Mechanical Engineering SUNY Stony Brook
Stony Brook, NY 11794
(516)-632-8303
Primary: anselmo@thermsa.eng.sunysb.edu  Secondary:apa1@cunixf.cc.columbia.edu





Date: Thu, 17 Jun 93 18:07:01 ADT
From: Joseph Wu <jwu@cs.ubc.ca>
Subject: Re:stem for Kawasaki's rose

>If anyone wants a quick PostScript diagram (13K) of the stem I've created for
>Kawasaki's rose, let me know.  As always, feedback is appreciated.

Took a look at it. Nice and simple. No time to actually fold a rose now
(I'm supposed to be working) to try it, but will do so tonight. Actually,
what I've created is more of a nest of leaves for the rose. It is based on
the bird base. I also did a real stem a while back based on a fish base
that included a pair of leaves. You should be able to figure that one out
just from that description. 8)

Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?





Date: Thu, 17 Jun 93 19:31:51 ADT
From: SPARKER@U.WASHINGTON.EDU
Subject: Repetitive motion and flowers

>Hello Sue-

>10,000 cranes?  Eeek!  And I thought folding 350 was bad.  How many cranes
>can you produce in an hour?  Do you have repetitive motion disorders too?

The most I've ever done was like 40 in 30 minutes when I did an assembly line
sort of method.  I've never been able to reproduce that speed.  I usually quote
people 2.5 minutes per bird.  I know I can do that consistently.  I don't seem
to have problems in my wrists or anything.  I usually do my folding sitting on
the floor at my coffee table.  I'm short, so this is a perfect height.  I feel
I've minimized alot of the motions from doing it so many times.

Flowers:  I'm really impressed with all the folks that can do the rose.  I've
tried, my friends have tried.  It just never seems to work out.  I go the
non-origami route for stems on the irises.  I use florist wire and florist
tape.

What's the strangest place you've ever folded anything?
 Last year when my friend and I were in Europe we tried folding birds
        everywhere and we left them on trains and stuff.  But I think the
 weirdest place was in Disneyland in line waiting for the Matterhorn.
        And we left some of them in the trees.

Sue
