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. 5. Bisect angle. 4. Valley-fold on existing Crease only halfway crease. 6. Valley-fold raw edge up, then unfold. 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 12. Add valley-creases. 10. Pleat on existing The middle one and outside creases. Order of layers 11. Mountain-fold on the pair are on existing crease is not crucial. Turn over. existing crease, creasing lines. Squeeze in the other sharply. Unfold completely two last. Turn over. and turn over. 13. Triple-crimp. Start in the 15. Valley-fold to half-way 14. Enlarged. Reverse- middle, work outwards. The new crease and unfold. Flex the fold. Valley-line exists. valley-folds fall where natural; upper crease backwards. Repeat behind. they don’t bisect angles. The Repeat behind. model will lie flat along the 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 21. Difficult step: fold edge 20. Like so. Repeat 18-19 bit above the crease line. A “F”down to leave a tiny gap behind. 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 creases. From this point on, results may 22. View of back side. The small triangle is vary a bit due to judgement folds. Try to a 3-sided open-faced pyramid. Push down keep left and right sides reasonably inside it to resolve tension on front side. Then similar. pinch it from the sides, and swing it down to either side. Turn over, top-to-bottom. 1 4 D 5 3 B 1 A 2 24. Mountain-fold through all 26. Squash the standing 25. An asymetric petal-fold. layers, sharply only on the flap. Start with the folds Fold in the order shown. rearmost ply. Goes through the joining points “A” and “B” to Folds “1” exist. “Roll in” folds bend in the middle “leaf”, at right the “petal-peak”. See next 2 and 5 with a fingertip. angles to crease “D”. Turn over, diagram. top-to-bottom.
$ Shamrock (continued) Copyright 2000 Stephen Hecht. All Rights Reserved 24-26 28 24-26 29. Like so. Repeat last step 27. Approximate on the left side. Left and right positioning shown. Repeat 28. Repeat 24-26 (the side will probably diverge more; 24-26 on left side. Make asymetric petal-fold). try to keep them similar. If any minor adjustments to keep paper shows between leaves, model symetric. 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 35. Thin the stem on both 33. Stuff the flap into 34. Repeat 30-33 on sides. The crease bends, the pocket behind it, left side. then becomes a spread- pleating if necessary. squash.
$ Shamrock (continued) Copyright 2000 Stephen Hecht. All Rights Reserved 38. Shape tip of leaf with a 37. Middle leaf. Reverse- 36. Entire model not shown. “divot”. Repeat on left and fold, distributing layers Valley-fold stem into position. right leaves. evenly. Repeat on left side Turn over top-to-bottom. of leaf. 39. Trim with reverse-folds, as needed. 40. Finished Shamrock.