00:00Hello everyone!
00:03We meet again today.
00:05I've previously posted about 20 origami tutorials and many people have said that the tutorials I recorded are quite difficult.
00:13I can understand this because most of the works I teach fall into the category of modern origami,
00:18which is different from the paper airplanes and paper boats we use to fold.
00:22In modern origami, there are some folding techniques.
00:25Okay, first, you need a bicolored sheet of paper about 15 cm in size.
00:31Place the paper with the colored side facing up.
00:35And fold two edge lines and two diagonal lines.
00:45Flip it over.
00:48Fold the four corners toward the center.
00:55Then, pay attention to this step. Fold this corner toward this line.
01:17Fold about one third of this area.
01:21Fold one third. Fold each corner according to its size.
01:30Fold each corner according to its size.
01:32You can estimate one third. It doesn't have to be very precise.
01:47This piece has very few steps and this part won't affect the final result.
01:51Alright, after folding, flip it over.
02:03Following the previous creases, fold it up.
02:09Pay attention to the front and back sides.
02:16Like this.
02:18Then, along this line and crease, fold the white corner at the top backward and then forward again.
02:32Like this. Fold this edge towards the center line.
02:35Like this. Fold this edge towards the center line.
02:39The other side is the same.
02:49Fold this edge towards this edge diagonally.
03:00Fold this edge towards this edge diagonally.
03:07The left side is the same.
03:10Flip to the back and repeat the previous steps.
03:15Flip to the back and repeat the previous steps.
03:44Then, open the part we just folded and restore it to its previous shape.
03:52Open this corner from the middle at the bottom.
03:57Fold the part we just folded along the crease and tuck it inside.
04:03After tucking it in, gently open it a bit.
04:07Fold this corner along the previous crease and tuck it inside.
04:13The left side is the same.
04:18Fold along the crease and tuck it inside.
04:22Gently open it and tuck this corner along the previous crease directly inside.
04:27The other side is the same.
04:28The other side is the same.
04:30The other side is the same.
04:56The other side is the same.
04:57After tucking all four corners, open it from the bottom to form a pyramid shape.
05:11Form a quadrangular pyramid shape.
05:18Now, pay attention here.
05:22We need to fold the contour of the topo.
05:26This pyramid down along the previous crease.
05:31Push this tip down to the bottom.
05:36This step is called a sink fold.
05:39We need to sink this tip entirely to the bottom.
05:41How do we do that?
05:44Just push it down.
05:45Just push it down.
05:47This is a relatively simple piece.
05:53Tuck it into the bottom and fold along the contours step by step.
06:03This is the sink fold step, where we tuck this tip completely into the bottom.
06:14From the inside, you can see that we've tucked this tip into the interior.
06:18In other words, we've pushed this part from the top into the bottom.
06:22So, this kind of step is called a sink fold.
06:32Through the process of making this mount, Fuji piece, we've learned what a sink fold is.
06:38In origami diagrams, a sink fold is usually represented by a solid black arrow.
06:44It is also accompanied by a mountain fold line on the piece with the part that needs to be sink folded shaded.
06:51This means that the shaded part should be sink folded along the mountain fold line into the interior of the paper layers.
06:59I hope that after today's tutorial, when you see a sink fold step in origami diagrams, you'll understand what operation it requires.
