1. $ Butterfly
Copyright 1998-99 Stephen Hecht. All Rights Reserved
A dollar bill makes a model 55mm long with a 65mm wingspan. For your first attempt, begin with a 3x7
rectangle larger than a dollar bill.
1. Begin black side up. 2. Crease halfway, 3. Soft mountain-fold
Valley-crease, the horizontal making a mark. on 45-degree line.
not too sharply. Turn over.
4. Pinch where mark from 5. Use mark from previous 6. Use the 2 existing
step 2 hits edge. Unfold. step to make this valley- creases to add 3 more.
fold. Unfold.
7. Pinch halfway marks 8. Mountain in half.
where indicated. 9. Crease and unfold.
10. Crease and unfold, bisecting. 11. Reverse-fold, in-and-out. 12. Reverse-fold.
Crease from previous step will
align with vertical crease.

2. $ Butterfly (continued)
Copyright 1998-99 Stephen Hecht. All Rights Reserved
13. Pleat top layer on 14. Reverse-fold, following 15. Pleat top layer, softly
existing creases. the hidden edge. Unfold to on the dotted line.
step 13.
17. Bisect angle. Softly on 18. Creases exist as shown.
16. Follow hidden vertical edge. dotted line. Unfold to step 13.
Softly on dotted line.
13-19 fudge
here
A B
19. Collapse on the creases. 20. Note that “A” does not 21. Pleat. Mountain-fold is the
First close up the mountain- reach corner. Repeat 13- existing half-line. For the valley,
fold triangle, pinching the tiny 19 on rear flap. bring the 1/4-mark to lie under
new valley-fold. Then flatten “B”. The dotted line is a hidden
to form mountain-fold “A”. mountain-fold caused by shifting
paper.

3. $ Butterfly (continued)
Copyright 1998-99 Stephen Hecht. All Rights Reserved
22. Note shifted creases in
fudged area. It needn’t be 23. Close-up of right edge. 24. Fold and unfold (bisection),
precise, it will be hidden later. Fold and unfold to hidden edge aligning previous crease with
Repeat 21 behind. (hold model up to the light). hidden edge.
25. Reverse-fold, in-and-out. 26. Reverse-fold. These 27. Fold and pinch, where
steps are similar to 9-12. limited by most recent
Turn over. reverse-fold.
29. Push from behind and create
a new mountain-crease linking 30. Begin to flatten by pinching
the base of the reverse-folds to where shown. Swing the
28. Undo the reverse-fold standing edge to the right.
from step 26. Then spread the pinch mark of step 27.
the area towards the right.

4. $ Butterfly (continued)
Copyright 1998-99 Stephen Hecht. All Rights Reserved
D
C
align
32. Swivel. The upper crease 33. Wrap top layer around to
31. To flatten, first align bottom partially exists. Use it to start
edges. Then flatten “C”, then the inside. Reverse-fold
the swivel and locate the end corner, noting the bisected
flatten “D”. Careful of tearing of the vertical crease.
due to imprecision. angle.
34. Reverse-fold hidden 35. Crease and unfold. 36. Reverse the two creases
corner, bisecting. Then Lower crease bisects. Upper just made and add the tiny
unfold it. crease aligns vertical edges. mountain-fold, pushing edge
towards the left (model not flat).
C
23-39
37. Still pushing towards the left, 38. Model is flat again. Swivel 39. Curve the tip towards you
also push in at the tiny valley-fold, on existing creases and tuck a bit. Helps keep together.
swinging the point down to align between layers. Repeat steps 23-39 on the
with edge “C”. other wing.

5. $ Butterfly (continued)
Copyright 1998-99 Stephen Hecht. All Rights Reserved
E
41. “E” is the mark made in step 40-41
40. Entire model again. 7. First make the long mountain-
folds. Then make the left valley 42. Thus. Repeat 40-41 on
Spread upper layers a bit. other side. Then open model
(an exact bisection). Then make
the right valley (not an exact out.
bisection), closing up the model.
43-44
43. Valley-fold, limited by the 45. Closed-sink central ridge
folds of step 41. If you have 44. Valley to previous crease
and unfold. Repeat 43-44 on the halfway.
been accurate, it will hit the
bottom corner. Unfold. left. Close up the model again.
47. Reform valley-folds from
46. Tuck into sink, creasing 44, then valley folds from 43. 48. Mountain to shape wing.
sharply. Repeat behind. Close up model, adding new Reverse-fold at overlaps to help
Then open model again. mountain folds. secure. Repeat behind. Bottom
half is now done.

6. $ Butterfly (continued)
Copyright 1998-99 Stephen Hecht. All Rights Reserved
50. Lift the single-ply 51. Reverse-fold the small
49. Top of model. Closed sink “reverse-fold”, exposing the corner, and close up the model.
(limited by paper at right). Then underside of the sink. This distributes the layers of
lift wing. the sink more evenly.
52. Squash the flap lifted in 53. Squash again. 54. Wrap raw edge to the
step 50, on existing creases. inside.
49-55
55. Tuck long flap into 56. Like so. Repeat 49-55
sunken pocket. Mountain- 57. Double-rabbit-ear the point
on other wing. to form antenna. Repeat
fold to shape wing. Reverse-
fold at overlap to help secure. behind. Distribute layers evenly.

7. $ Butterfly (continued)
Copyright 1998-99 Stephen Hecht. All Rights Reserved
58. Curl antenna. Fold wings, 59. Finished.
not too sharply, where limited by
body. Repeat behind.