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| 1.Fold into half (to make a crease). Fold along the central fold line. | 2.Fold so that the width of "A" may become the same. | |
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| 3.Fold along the central fold line. | 4.Fold by width of the half of "a". Fold the middle of the triangle in the direction of the tip. Fold by width of the half of "a". | |
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| 5.Fold into half to the opposite side. | 6.Fold wings along the base edge. | |
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| 7.Open wings. | 8.Completion. | |
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Completion drawing of "Navel plane Red portions in upper end of plane are elevators in this figure. |
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