Biplane.pdf

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Biplane II by Marc Kirschenbaum (NY)
©1996
Complex
A 10" square makes a model with a 4" wingspan
1. This will be the color of the
body. Precrease along angle
bisectors.
2. Valley the corners to the
intersections of creases and
unfold.
3. Pleat along existing creases.
4. Valley to center.
5. Turn over.
6. Fold sides to center, allowing
flaps to swing outwards.
7. Unfold entirely.
8. Collapse.
9. Squash the center flap.
9-10
10. Valley down as far as
possible and unfold. Repeat
steps 9-10 behind.
11. Spread open to reveal small
flap.
12. Sink triangularly halfway.
11306301.002.png
12-13
13. Close back up. Repeat steps
12-13 on the other side.
14. Petal fold.
15. Valley to intersection of
creases.
14-16
16. Precrease sides of flap and
then open up. Repeat steps
14-16 behind.
17. Valley corners. Turn over.
18. Swing a flap over, front and
back.
19. Precrease through all layers.
20. Unfold bottom flap.
21. Squash. Do not flatten
completely.
22. Wrap around to make
symetrical.
23. Pull out single layer.
24. Valley over.
23-26
18-26
25. Reverse fold.
26. Swing over flap while
incorporating a reverse fold.
Repeat steps 23-26 behind.
27. Repeat steps 18-26 in mirror
image.
11306301.003.png
28. Valley up corners.
29. Pull out hidden corners.
30. Pull out hidden points.
31. Crimp sides.
32. Valley down four points.
33. Stretch apart sides.
33-34
34. View from step 33. Double-
crimp upwards and flatten.
35. Repeat steps 33-34 on other
side.
36. Lightly swing up top section.
36-37
37. Swing back down while
collapsing the top single
layer outwards.
38. Repeat steps 36-37 behind.
39. Swing down flaps.
11306301.004.png
40. Swing over a layer, undoing
reverse fold. Repeat behind.
41. Wrap around a single layer.
Repeat behind.
42. Swing back. Repeat behind.
43. Pull flap out, releasing layers
at left. Repeat behind.
44. Asymmetrical squash.
Repeat behind.
45. Valley layer through. Repeat
behind.
46. Swivel down. Repeat
behind.
47. Swivel over. Repeat behind.
48. Bring single layer to surface
(closed sink). Repeat
behind.
49. Sink triangularly, so as to
match up with the folded
edge in the middle. Repeat
behind.
50. Sink triangularly again.
Repeat behind.
51. Wrap around a single layer.
Repeat behind.
11306301.005.png
52. Swing flap over while
incorporating a reverse fold
along existing creases.
53. Swing over two layers.
Model will not lie flat.
54. Pull out single layer from
behind.
55. Swivel under.
56. Swing single layer back.
57. Swivel up.
52-59
58. Wrap single layer around
(closed sink).
59. Close model back up.
60. Repeat steps 52-59 behind.
61. Swing over flap while pulling
up a layer through the
pocket. Repeat behind
62. Valley along existing crease.
Repeat behind.
63. Swivel down hidden middle
layer into pocket. Repeat
behind.
11306301.001.png
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