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Aveuglami project - folding sheet
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Pepi Envelope
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Author van der Ploeg Elsje
Category furniture
Difficulty *
Format A4
Base -
Text This envelope model, quite nice, is dedicated to the cat of the author of the design.

1. Take a rectangular sheet of paper (eg A4), placed vertically. If it is two-tone, place thecolor underneath.

2. Create a valley fold by bringing the left edge over the right edge from left to right.
We obtain a vertical rectangular shape composed of two simple flaps linked by a left verticalhinge fold.

3. Bring, using a movement from right to left, using a valley fold, the right edge of theupper flap onto the hinge fold. Mark the fold well.

4. Flip the folding from right to left.
The hinge fold is on the right.

5. Bring by a movement from left to right, by a valley fold, the left edge of the upper flapon the hinge fold. Mark the fold well.

6. Unfold everything, to return to the initial shape.
The two folds that we have just made must be vertical valley folds.

7. Mark the middle of the two vertical edges by folding upwards into a valley, withoutmarking, the lower edge towards the upper edge.

8. Fold the lower edge upwards on the center line marked in the previous step.
We obtain a rectangular shape with a rear rectangular flap and a horizontal rectangular flaplinked to the previous one by a lower hinge fold.

9. Fold the left valley edge to the right, along the first fold from the left (created in step2). Mark the fold clearly on the lower part of the shape.

10. Fold the right valley edge to the left, along the first vertical fold from the right(created in step 5). Mark the fold clearly on the lower part of the shape.
We obtain a vertical rectangular shape, with two free upper flaps. These two flaps aresingle thick in their upper part, double thick in their lower part.

11. Bring the lower right apex of the upper left flap to the left vertical edge, via a valleyfold to the left at 45°. Mark and unfold.

12. Bring the lower left vertex of the upper right flap to the right vertical edge, using avalley fold from left to right at 45°. Mark and unfold.

13. Unfold the left and right flaps.
We find ourselves in the situation of step 8. We will now invert the two lower left and rightvertices along the 45° folds that we have just prepared.

14. Slide your left index finger behind the lower flap, in the left part of it. Gently pushthe flap to the right, folding it into a valley along the vertical crease. Slowly lower yourindex finger, placing it on the flap which folds to the right.
A triangle is formed at the bottom, using the 45° folds formed during the previous steps (wespeak of a sink fold).

15. Once the triangle is fully formed (the flap is flat), return the right flap to its initialposition. The lower left vertex has been inverted.

16. Repeat steps 14 and 15 on the right. To do this, slide your right index finger behindthe lower flap, in the right part of it. Gently push the flap to the left, folding it into avalley along the vertical crease. Slowly lower your index finger, placing it on the flapwhich folds to the left.
A triangle is formed at the bottom, using the 45° folds formed during the previous steps.

17. Once the triangle is fully formed (the flap is flat), return the left flap to its initialposition.
The lower right vertex has been inverted.

18. Return the lower flap to vertical.
This flap consists of a central rectangular part bordered by two elements delimited by avertical fold. These folds will become mountain folds, which will have the effect of slidingthese two outer parts behind the middle part.

19. Grasp the vertical flap between the thumb and index finger of your right hand, so asto keep it vertical.

20. With the thumb of your left hand, push the left part of the vertical flapbackwards, so as to bring it behind the vertical flap. Do not flatten.

21. Repeat the previous two steps, swapping the role of the two hands.
We obtain a three-dimensional shape consisting of a vertical median flap linked on each sideto a vertical flap located in a perpendicular plane.

22. Bring the top of the two side flaps until they stick against the middle flap. Then gentlypush the assembly backwards, watching the 45° folds at the foot of each of the side flaps.Flatten the fold completely.
We obtain a shape composed of a large rear vertical rectangle linked by a structure of 45°folds to a front vertical flap. The bottom of the shape is made up on the left and right by smallsides at 45°. These sides are part of small triangles, one side of which is horizontal. Thehorizontal sides of the two triangles, located on either side of the front rectangle, draw animaginary horizontal line that must be located.

23. Fold the front rectangular flap downwards into a valley, along the imaginary line thatyou have just identified. Unfold.

24. Slide, reversing the previous horizontal fold, the upper part of the front flap into thepocket formed by the triangles hidden behind it.
We thus built a pocket at the bottom of the fold.

25. Flip the fold from right to left.

26. Fold the two existing long vertical folds into a valley to the left or right.
We obtain a rectangular shape equipped in particular with two free front flaps, ending at thebottom with a triangle having a side at 45°.

27. Create a valley fold by bringing the 45° side to the left (right) vertical side. Mark thefolds well.
We make folds at 22°30, which gives sharper triangles.

28. Open the two vertical flaps, keeping the folds that you have just made.

29. Flip the fold from right to left.

30. Fold the two long vertical folds into a valley.
We obtain a vertical rectangular shape, with two large vertical flaps ending in anelongated point covering a very thick lower rectangular flap.

Transform the top horizontal edge into a point.

31. Locate the right edge and the upper right vertex of the left front flap. Bring the topleft vertex of the shape, by a valley fold at 45° from left to right, on the right edge that wehave just identified.
The fold passes through the vertex identified previously, and is done through all thethicknesses.

32. Make the same fold with the upper right vertex of the rectangular shape.
We get a point upwards.

33. Bring the point through a valley fold, without marking it initially, under the lowerrectangular flap. Slide it as far as possible under this flap, symmetrically.

34. Flatten the fold, clearly marking the valley fold that you started in the previous step.
It's over, here's a pretty little envelope.

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Contents File
Pepi Envelope - PDF file ML-Furniture05Ang.pdf
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