Origami Instructions: Begonia Leaf (Peter Engel)


Uploaded by AdamsSara on 06.06.2011

Transcript:
In this video I am going to show you how to fold
a begonia leaf designed by Peter Engel.
It's diagrammed in his new book "Origami Odyssey"
and it's actually such a new book
that while I'm recording this video it's not quite out yet.
It will be available starting July 2011
and you can already preorder it now.
I had the unique opportunity of actually getting a sneak peek.
There are 21 models diagrammed in the book
and I folded a couple of them thinking about which model
I wanted to demonstrate in a video.
This is the sun, it's the center piece of the cover,
too, and a beautiful but also a bit complex model,
perhaps the most complex one in the book.
Next, under the same theme of solar system,
there's this fabulous fabulous moon.
I then went on to
fold this unique model of waves.
which I think a very interesting theme for a model
and I absolutely love it.
And, of course, I test-folded the begonia leaf,
which I'm going to be demonstrating today.
So, let's get started.
We're going to start with a square sheet of paper
that's 15cm by 15cm
or 6in by 6in.
The finished model then has
a length of about 14.5cm or 5.75in.
So you can see it's almost as long
as the starting sheet of paper.
The width is about 9cm or 3.5in.
We're going to start by folding in half diagonally.
Then rotate the model a bit,
take one layer of paper only,
and bring the edge to the edge you just folded,
not really creasing the paper,
but just rolling it over
and then pinching just by that edge of the paper.
Then unfold.
Rotate the model and then
again bend the paper without creasing it
as if you'd create
a fold between these two points.
So we're rolling it over to that point,
rolling it over to this point,
and then making a pinch on the left.
Then unfold.
Now take this edge
and bring it to the central crease,
again just bending the paper
to get it to be in the right angle.
Then make a pinch
to get an intersection with the previous pinch.
And unfold, mine was pretty close here.
Now we're going to take that intersection as a reference
to make a horizontal crease through it.
Just aligning it, capturing the point
and then ensuring that it's a nice, horizontal crease.
Unfold, rotate,
and add that crease
in a 90 degree angle.
And unfold.
We now divided the sheet of paper into
a larger section and a smaller section.
We're going to fold the larger section in half.
Or actually, reverse the fold.
Sorry for that.
Then flip the model over
and take that edge and
fold it to that crease
releasing the rest to only crease on one layer of paper.
Then unfold and repeat on the other side.
Turn over,
fold the larger section in half,
flip over the model again,
and fold in half the inner section.
And unfold. Now rotate
so that the smaller square is in the bottom and
the larger square is in the top.
Now we're going to crease
a diagonal right through
the center of the square consisting of 4 smaller squares.
So first pinch to get the right accuracy
and then crease.
Now along these central creases
between the two of these
we're going to inside reverse fold,
just pushing the paper inside, like this.
Then fold back
the other part of the paper like this.
Repeat on the other side.
First inside reverse fold
and then push the paper back just like that.
Then we can open the paper
to get a square again.
We're going to flip over the model.
make all the creases nice and strong.
We've got this flap here.
We're going to fold it up, again crease.
Now take this lower corner
and fold that small square in half.
Then unfold.
Now we're going to take this angle right here
and fold it in half.
So we're going to take that small edge
and fold it to the crease line.
And make a crease. Same thing on the other side.
Just like this.
Now we're going to inside reverse fold
that section. So we're opening up the paper
and pushing it to the back,
so that when you look at it from the other side
you can see you've brought this to the front.
But let's flip the model over again for a second.
What we're going to do is we're going to take this flap
and fold it as far as possible.
Now we have this section of paper
and we're again going to bring it to the front
by reverse folding
along the creases we just created.
And again the paper is in the front.
Next we're going to make a petal fold on this section.
First take this edge and precrease it
to the edge. Make a crease all the way through.
Then unfold.
Fold inside in the bottom along the crease you created.
In the top you can see that
there's a crease ending right here.
We're going to make a crease from this point
up to that point.
Just like that.
Then we can collapse completely.
So the result looks like this.
Now you have this central line here.
We want to sink this part of that petal fold
just along that crease line.
First we're going to precrease
and then we're going to open up the model
just in that small section.
Right there.
Go along the creases we just made,
making them all mountain folds.
This one, and that one. You can see it's all mountain folds.
Then push in the creases
that are in the center. Just like that.
Repeat on the other side.
First inside reverse fold.
Then fold over as far as possible.
Then bring to the front, the colored side of the model.
Turn over.
Make a petal fold,
Extending the crease to the corner.
Then sink the overlapping section,
trying to make it look quite symmetrical,
although it doesn't matter that much.
Again open sink that part.
So you've got the stem started.
Next we're going to
bisect this angle right here.
We're going to take this small edge
and bring it to the crease line.
And crease. Same thing on the other side.
We're going to need those creases in a moment.
But first let's add some crease lines just for decoration.
The first is bisecting this angle right here.
You can just take the top layer
and fold it to the bottom.
You have to be careful not to rip the paper here.
So simply open it up a bit.
And make a crease up to there.
Same thing on the other side.
And unfold.
In the bottom let's make a mountain fold
stick up and then fold that mountain fold down to
fold the other angle bisector.
Same thing on the other side,
folding that angle bisector.
And unfold.
These are just creases for decorative purposes.
But next let's work a bit more on the actual shape of the leaf.
Let's make a reverse fold along this crease here,
just bringing the paper up and folding it down.
From now on we're going to be doing different steps
on the left and the right of the model.
Next we're going to take this edge right here
and bring it to that crease line.
So you can see, I'm open the model here,
taking that crease, aligning it
with the crease line, making a new crease
and then flattening the model
like this. We're making a new crease right here.
So again, the whole action is not a lot.
It's first bringing that point over there
and then simply pushing the model flat again.
Next we're going to be working with those creases
we created before.
We're going to open up this model.
You can see a crease right there.
We're going to fold it back and then
extend a crease that's parallel to the edge.
Just like that.
So I've got the point. Turn over the paper
and ensure that it's parallel by bringing edge to edge.
And crease.
Same thing on the other side.
First open, fold to the back up to that corner
and then make a nice, horizontal crease.
Just like that.
Now we want to take those white sections and bring them to the back.
The front should be all green.
For that I just push on this point
very carefully to flip the paper in that section inside out.
Then flatten that paper again.
Same thing on the other side.
Let's look at it from this side.
Taking this point and pushing it carefully
over to the other side to then
flatten the paper like this.
Now let's inside reverse fold
this part back up and then
another inside reverse fold down.
So it looks like this.
Then we've got this small corner visible right here,
We can make it a bit more visible.
We're going to fold an angle bisector
to lock this in place.
I'm just going to open this up so you can see what I'm doing.
Here, this edge goes right there,
making a strong crease, so it's locked in place.
Next let's get this stem out of the way by folding it to the top.
It will fold naturally in a certain point.
Then fold right here
- there's a crease ending here
and there's another crease ending here -
and we're simply going to
make a crease between those two points.
Then again we want to lock it in place.
We have some paper in the back.
We can fold it over.
to make a small lock.
Next we're going to work on the other side.
Let's bring this to the front.
You can see there's a small corner overlapping here.
We're going to fold that inside.
It doesn't have to be super precise.
It just has to be out of the way.
Then bring that to the back
Now it fits in.
Fold this along an existing hinge to the front.
Now we want to get rid of this strip of paper.
So through all layers of paper we're going to fold along that line.
Make a strong crease.
Fold that corner to the back, so that then
you can tuck that whole section of paper inside,
including that small corner we want to hide.
Then simply make it a nice, strong crease to flatten the model.
Now we want to add some more decorative creases.
We've got all of these folds here already.
Some are missing right here and here.
We're going to take this from the back.
Make this a mountain fold, make that crease a mountain fold.
Bring the two together
to make a nice angle bisector.
Same thing on the other side,
Making a nice angle bisector,
so that we have those decorative creases, too.
Now you can see the model is almost done.
We still have to take care of getting that
stem to look nice.
So we've got it in place here.
We want to make it a bit thinner.
For that we're going to fold it in half along the center
and make a rabbit ear fold.
We're basically pushing the paper together
and then pushing it down,
which makes a small crease on each side.
It sticks up like that.
Then fold it down.
Again make a strong crease.
Flip the model over.
There's your stem, it's white.
If you use all green paper it will be green.
Now we just want to get rid of some corners.
Here's one corner that we want to soften.
It's also a corner where the paper easily rips.
So you can hide it if there's a small rip there.
This is a very prominent corner, we want to get rid of that.
We're just folding them to the back in a simple mountain fold.
And here's another small corner.
And then your begonia leaf designed by Peter Engel
is all done. I really love this model
and I hope you enjoyed it, too.
If you did, you may also enjoy his new book "Origami Odyssey".
Happy folding!