okey-dokey everybody sort of strange but
today's thing is going to be yep yep
there we go there we go a origami
hyperbolic plane if you have seen me
or know me really well you know that
I've made a bajillion of these things
and I'm gonna add a bunch of links today
to today's thing just because this is
less like a super creative thing like
you can pick your paper and maybe I
would be thrilled if you guys came up
with out some ideas but yeah these are
hyperbolic planes that Daina Taimina I'm
probably saying in the wrong suggested
or like figured out how to crochet and
so I'm gonna show you to make one yeah
and this by the by I should say this
came about because of a fantastic
student of mine who gave me this literaly this one four years ago and it has
been sitting on my shelf ever since I
was overjoyed when it came around and
yeah and you'll notice that actually
these two are slightly different so
there is room to play but I'm going to teach you
to make the pink one because that's what I
know how to do right now and it's gonna
great so you're gonna get a piece of
paper it can be a totally regular piece
of paper I do happen to have origami
paper and I'm gonna use that because
it's super easy to for you guys to see
when I'm on the web site versus on
second so the very first thing we're
going to do is you're gonna fold it into
a triangle like this unfold it this way
it's totally worth your time to make
nicer creases cause will make your
life easier later on I'm gonna suggest
that you flip it over to the other side
this will help
so it's kind of like making a little
mountain you type thing right here
then we're gonna fold it horizontally
like this you think those are words that
I can use reasonably maybe unfold it and
what's nice about this is that then it
starts kind of popping like you'd like
it to and what we're gonna do is we're
gonna push in here so that it becomes
this little triangle with those fluffy
bits right there okay so now we've got this
and we need to start making all of these
lovely little lines here so and what
we're gonna do is take this point and
get it to match up over there and then
we're gonna go from here to here my
coffee maker in the background in case
you couldn't in case you can hear that
and then we're gonna fold this line up
parallel with this line and I haven't
yet to get it to be totally perfect when
I do this but it works better well and
then we're gonna get a we're gonna
divide these all equally in half as well
to get a line here right here
so this point up to this intersection
and then if you take this point and push
it to this intersection you'll cut the
second one in half not quite fold fold
the second one in half
then what I'm gonna try to do is I'm
gonna get this line and this line to
fold on each other which means the
second line down here which I know is
kind of hard for y'all to say the second
line down here you know the curves and I
go second line down here is where my
bottom line is gonna fold up that
original triangle and then this bottom
is just gonna come up to meet that very
first parallel line okay and what
happens now all of these beautiful
lovely lines this is where it gets a
little picky but it's not so bad what
you're gonna do is this first section on
the outside you're gonna fold it over
right up until this diagonal like here
and things are gonna start kind of
pinching strangely um so I'm gonna keep
and then I want to do this all the way
around the whole thing so I'm gonna
pinch pinch pinch and you're gonna get
this weird little flappy bit right here
pinch pinch pinch same thing here okay
and then just like you might see here
where we're getting these like little
foldy things what I really want to be
doing is I want to take my original
thing and I'm gonna pinch I'm gonna kind
of like accordion style but only this
triangle here that's really what I want
to end up doing so my next job is that
I'm gonna take this second line and then
pinch that up as well just work my way
around
and I've noticed it will help if you
just start thinking about these
recorders kind of pinching in two
straight lines here that will kind of
paper bends it's cold II this is really
relatively forgiving getting closer that
kind of pointed star shape that you saw
at the beginning give yourself some time
I have iced teas and feel for paper but
it's just paper right and if you tear
you go where I start at the beginning
notice
it's gonna kind of naturally do this
lovely curving thing
this is totally negatively curved space
like that it's kind of a strange piece
and then you'd have your very own
hyperbolic origami you guys yeah yeah
take your pictures viewers or videos
even better post it I would love to see
it you're a little fantastic and I hope
you are well bye
