especially if the fold serves as the basis for the next one. A crease created by a fold is represented by a fine line. Here are images of the sheets illustrated on page 8 after the fold-and-unfold maneuver has been completed.
The Widths of Lines and Borders
The lines used to indicate folds are fairly thick (about 0.5 mm). In contrast, the line indicating a crease made by a fold is thin (about 0.15 mm). The border or outline of every figure is about 0.35 mm thick, which is about halfway between the other two widths. Only these three widths are used in origami.
Numbered Steps
A sequence of numbers indicates the order of the steps needed to fold a model. A “trick” that can be used when encountering a problem with a step is to look ahead at the next step, since each diagram shows the result of the preceding step. By looking at the result of the previous fold, you should get a clearer picture of the step you are currently having trouble with.
Happy folding with your first model!
Recommended paper size: 6 x 6 inches (15 x 15 cm)
Crease pattern showing the finished model’s folds
The initial sheet of paper and the final model juxtaposed
Practice Model:
Place Card Holder
Make a valley fold along the horizontal median, and then unfold.
The fold made in step 1 is represented by the thin horizontal line. Make a valley fold along the vertical median, and then unfold.
Valley fold the right and left edges to the central crease, and then unfold each.
Valley fold the top and bottom edges to the central crease, and then unfold each.
Make valley folds at each of the four corners.
Make valley folds on the right and left sides by bringing their edges to the crease along the center.
Your paper will look like this once step 6 has been completed. Flip the model over.
Flip over the model. The side that was facing the working surface is now on top, and vice versa. Make a valley fold along the existing crease line, and then unfold.
The fold required has already been creased. Make a valley fold, and then unfold.
Make a valley fold, aligning the bottom edge with the crease along the center.
Tuck the top edge into the “pocket” indicated by the arrows. This will make the model three-dimensional.
The finished Place Card Holder. A tag with the name of the guest can now be inserted into it, or the name can be written directly on the white central portion.
Chapter 2
THE MOUNTAIN FOLD
The second basic fold in origami, the mountain fold, does not come as naturally or as intuitively as the first one, the valley fold. But from a technical point of view, the mountain fold is not complicated. In this chapter, as in the first, you will learn the symbols associated with the mountain fold and find tips and a trick for creating it. At the end of the chapter, as in all the others, the concepts you learn will be “translated” into folds to create a model—in this case, a rectangular box.
TOPICS AND SYMBOLS
| Mountain fold indicated by dashes and dots |
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| Arrow indicating the direction of a mountain fold |
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| Hidden edges |
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| Repetition |
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| Enlarged view |
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| Reduced scale |
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PRACTICE MODEL
| Place Card Holder |
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The Mountain Fold Line
The mountain fold is indicated by a row of dashes alternating with dots. The width of the fold line is roughly 0.5 mm. Compare the shape of the mountain fold in fig. 4 below with the valley fold in fig. 2 on page
