Shamrock

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					$ Shamrock
Copyright 2000 Stephen Hecht. All Rights Reserved
A dollar bill makes a model 70mm wide and 50mm tall. For first attempt, you may wish to
use a larger 3x7 rectangle.




                                                pivot

                                          2. Pivot at lower-left corner,             3. Repeat step 2 behind.
    1. Start green side up.               valley-fold lower right corner              Unfold completely and
    Valley-fold in half.                  to top edge.                               turn over.




     4. Valley-fold on existing                5. Bisect angle.
     crease.                                   Crease only halfway
                                               up, then unfold.                       6. Valley-fold raw edge
                                                                                      to folded edge.




                                                  4-7




    7. Pleat, bringing existing
    mountain-crease to folded               8. Repeat 4-7 in mirror                9. Valley-fold halfway and
    edge. Unfold completely.                image.                                 unfold.
$ Shamrock (continued)
Copyright 2000 Stephen Hecht. All Rights Reserved




   10. Pleat on existing                                                 12. Add valley-creases.
   creases. Order of layers                                              The middle one and outside
   is not crucial. Turn over.            11. Mountain-fold on the        pair are on existing crease
                                         existing crease, creasing       lines. Squeeze in the other
                                         sharply. Unfold completely      two last. Turn over.
                                         and turn over.




 13. Triple-crimp. Start in the
 middle, work outwards. The new            14. Enlarged. Reverse-        15. Valley-fold to half-way
 valley-folds fall where natural;          fold. Valley-line exists.     crease and unfold. Flex the
 they don’t bisect angles. The              Repeat behind.               upper crease backwards.
 model will lie flat along the                                           Repeat behind.
 existing radial creases.




   16. Closed sink the upper              17. Closed-sink the next
   corner. Mountain-fold the              corner, along the same line     18. Swing down. Note
   lower. Repeat behind.                  as the previous sink. Repeat    new crease at the right.
                                          behind.
$ Shamrock (continued)
Copyright 2000 Stephen Hecht. All Rights Reserved



                                                                        18-19
                                                                                                          F




                            E




  19. Valley-fold edge “E” a little       20. Like so. Repeat 18-19                21. Difficult step: fold edge
  bit above the crease line. A            behind.                                  “F”down to leave a tiny gap
  flap comes out at bottom.                                                        between “leaves”. Do the same
                                                                                   on the back version of “F”. Also
                                                                                   spread lower flaps outwards.

                            1:push down


                       2:




                                                                         23. Flatten completely and sharpen
  22. View of back side. The small triangle is                           creases. From this point on, results may
  a 3-sided open-faced pyramid. Push down                                vary a bit due to judgement folds. Try to
  inside it to resolve tension on front side. Then                       keep left and right sides reasonably
  pinch it from the sides, and swing it down to                          similar.
  either side. Turn over, top-to-bottom.

                                                        1           4

                   D


                                                            3   5
                                                                                                      B

                                                                1
                                                    2                                           A


 24. Mountain-fold through all                                                      26. Squash the standing
 layers, sharply only on the              25. An asymetric petal-fold.
                                           Fold in the order shown.                 flap. Start with the folds
 rearmost ply. Goes through the                                                     joining points “A” and “B” to
 bend in the middle “leaf”, at right      Folds “1” exist. “Roll in” folds
                                          2 and 5 with a fingertip.                 the “petal-peak”. See next
 angles to crease “D”. Turn over,                                                   diagram.
 top-to-bottom.
$ Shamrock (continued)
Copyright 2000 Stephen Hecht. All Rights Reserved


           24-26                                                              28
                                                               24-26




   27. Approximate                                                      29. Like so. Repeat last step
   positioning shown. Repeat                28. Repeat 24-26 (the       on the left side. Left and right
   24-26 on left side. Make                 asymetric petal-fold).      side will probably diverge more;
   minor adjustments to keep                                             try to keep them similar. If any
   model symetric.                                                      paper shows between leaves,
                                                                        swivel it upwards.




  30. Tuck as much as possible           31. Reverse-fold, closed-       32. Squash-fold. Hidden
  inside (behind the petal folds),       sinking at the thick corner.    valley-fold makes top of leaf
  pleating if necessary.                  Judgement fold: check          symetric.
                                         front side.



                                                30-33




      33. Stuff the flap into                34. Repeat 30-33 on          35. Thin the stem on both
      the pocket behind it,                  left side.                   sides. The crease bends,
      pleating if necessary.                                              then becomes a spread-
                                                                          squash.
$ Shamrock (continued)
Copyright 2000 Stephen Hecht. All Rights Reserved




                                         37. Middle leaf. Reverse-       38. Shape tip of leaf with a
  36. Entire model not shown.            fold, distributing layers       “divot”. Repeat on left and
  Valley-fold stem into position.        evenly. Repeat on left side     right leaves.
   Turn over top-to-bottom.              of leaf.




   39. Trim with reverse-folds,
   as needed.
                                                        40. Finished Shamrock.

				
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