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A Beginner's Guide to Crease Patterns

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Intermediate Crease Patterns

Like the simple CPs, these intermediate ones have flat-foldable bases. The main creases are still easily located, but the smaller ones will take some work to fill in. Also, some awkward paper contortions might be necessary to collapse the base.
Chocobo, Satoshi Kamiya
Satoshi Kamiya's website >> "Gallery" >> "2001" >> "Chocobo"

This CP is essentially a bird base with two border grafts to provide extra detail for the claws on the feet and a crest for the head. The claws (the top right and lower left corners of the square) are formed from a series of 90/45/22.5 reverse folds. This type of folding is common in many complex models, where a point at an edge is pleated and reverse folded into claws or fingers. The centre point of the bird base construct becomes the tail of the chocobo. The free point of the bird base construct (the lower right corner of the square) is spread out into a rectangular flap; the two free corners of this rectangular flap form the wings.

A division into thirds is necessary to locate the creases in this CP. The bird base construction in the bottom right uses a square whose side is two-thirds of the width of the main square. Pleat the border grafts first and collapse the head region, then finally do a bird base construction to form the rest of the body.

Chocobo partial steps
Figure: (top) Partially collapsed base; (bottom) Closeup of head region

This model also has a straightforward folding sequence (this can be found in the Tanteidan 9th Convention book).


Black Ant, Manuel Sirgo
Design in Origami >> "Authors" >> "Manuel Sirgo" >> "Gallery" >> "Hormiga Negra"

This CP is diagonally symmetric and divides the original square into four smaller ones. The concentric squares at two corners of the CP indicate the multiply-sunk regions forming the narrow legs, while the other two CPs are bird base constructs, with the points split to form the mandibles and antennae of the ant.

Start with a waterbomb base and form the two bird base constructs on the top left and bottom right of the CP (top figure). The two triangular sides are then crimped inwards, and then open-sunk to form the narrow legs (bottom figure).

Ant partial steps
Figure: (top) Initial waterbomb base, showing the bird base constructs of the top left square; (bottom) Sink squares folded in, lower right bird base construct. The green lines are the sink lines used to narrow the legs.

The bird base construct for the antennae is then pulled forward and spread squashed to form the head.


Sheep, Noburu Miyajima
Origami Creator's Fantasia >> "Gallery" >> "Japanese Zodiac" >> "Sheep"

This CP has two regions: a bird base construct in the top left and two edge grafts forming the rear of the body. A direction change construct forms the transitions between the two regions. The two edge grafts contain a sinks to narrow the body; these can be ignored until later, as usual.

Fold the direction change construct first and then fold the two edge grafts inwards around it. Sink the two sides to narrow the body, and then finally fill in the bird base construct that forms the head of the sheep.

Sheep partial base
Figure: Partially collapsed base. This is a view from the underside of the model, looking into its interior.


Horse, Noburu Miyajima
Origami Creator's Fantasia >> "Gallery" >> "Japanese Zodiac" >> "Horse"

This is an example of a hybrid base consisting of a kite base extending outwards towards the bottom right corner, and two edge grafts along the top and left sides.

First form a preliminary base centred at the tip of the kite base, and then squash fold all the flaps. The complicated part here would be the folds that lie to the right and to the bottom of the bird base construct; these are the folds that form the mane. Notice that if the longer crease lines are extended into the central diamond, the resultant CP is that of another swivel fold construct! Hence, the next step would be to form these swivel folds, as well as those for the front legs.

To fill in the mane folds, the additional swivel folds need to be unsunk (Figure, top). The flap is then spread-squashed (Figure, middle), and then the inner portion closed sunk into the rest of the point (Figure, bottom).

horse partial steps
Figure: (top) Swivel folds after unsinking; (middle) Spread squashes; (bottom) Close-sinking half of the spread squash.

Compare the folding of this CP with that of Mark Leonard's Wolf, discussed in the previous section.


Camel, Noburu Miyajima
Origami Creator's Fantasia >> "Gallery" >> "Animals" >> "Camel"

This CP requires a double kite fold to locate the main creases, and two book fold (one horizontal and one vertical) for the rest of the creases. Apart from the top rightmost and bottom leftmost corners, the CP is symmetric about both diagonal axes. The sharp ends of kites form the head and the tail, while the legs are formed from the other corners of the kites.

To collapse the base, start with the two centre crimps which form the humps of the camel - these are the two rather flat triangles around the centre of the square. Without undoing these crimps, start tucking in the head and tail regions until the two triangular humps are formed - refer to the photo to see where you're heading. Once these are formed, tuck in the paper along the sides of the body and fold in the legs. At this point, the model will finally lie flat. Fill in the folds for the head and front legs - these folds have to be done simultaneously. Repeat the process for the tail and hind legs.

Camel partial step
Figure: Base of the camel with the two centre crimps in place.


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