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Cross Box
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Cross Box
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Aveuglami project - folding sheet

Cross Box

Author Baggi Giuseppe
Category Box
Difficulty *
Format A4
Base others
Text A surprising box due to its great simplicity, it can be made with any rectangular paper. The technique used makes it possible to produce boxes with an almost square section as well as very elongated boxes.


An astonishing box due to its great simplicity, it can be made with any rectangular paper. The technique used makes it possible to produce boxes with an almost square section as well as very elongated boxes.

1. Take a rectangular sheet of paper, hold it in a horizontal position.

2. Form a valley fold by bringing the top edge over the bottom edge from bottom to top.
We obtain a shape composed of two flaps connected by a hinge fold forming the upper edge.

3. Form a valley fold by bringing the lower edge of the upper flap from bottom to top on the upper hinge fold.

4. Flip the fold from left to right.

5. Form a valley fold by bringing the lower edge of the upper flap from bottom to top on the upper hinge fold.
We have created a rectangular shape which hides a 4-sided accordion. The upper flap is free at the top.

6. Form an oblique valley fold by bringing, downwards and from left to right, the upper left vertex of the upper flap on the lower edge of the accordion.
The fold starts from the left bottom corner. The left edge of the top flap comes down and aligns along the bottom edge.

7. Form an oblique valley fold by bringing, downwards and from right to left, the upper right vertex of the upper flap on the lower edge of the accordion.
The fold starts from the right bottom corner. The right edge of the top flap comes down and aligns along the bottom edge.

8. Flip the fold from top to down.
You have now a top rectangular flap of a single thickness with a top hinge fold.

9. Form an oblique valley fold by bringing, downwards and from left to right, the upper left vertex of the upper flap (double thickness) on the lower edge of the accordion. Unfolfd.
This preparatory fold starts from the left bottom corner. The left edge of the top flap comes down and aligns along the bottom edge.

10. Form an oblique valley fold by bringing, downwards and from right to left, the upper right vertex of the upper flap (double thickness) on the lower edge of the accordion. Unfolfd.
This preparatory fold starts from the right bottom corner. The right edge of the top flap comes down and aligns along the bottom edge.

11. Flip the fold from top to down.
We come back to [step 7]

12. Put down the top flap so that the top edge lays on the table. Pay attention not to unfold the triangles.
You have now a 6 sided smooth flap. The triangles are no longer visible. The top edge is a long one, the bottom edge is shorter.

13. Flip the fold from right to left.
Bottom of the shape, you can see again the triangles.

14. Put down the top flap so that its upper edge lays on the bottom edge of the flap carrying the two triangles.
The triangles are no longer visible. You see now a smooth rectangular flap with an upper hinge fold.

15. Reversing the top hinge fold from mountain to valley, put the rectangular flap behind the flap carrying the two hidden triangles.
You can see again both the triangles on the bottom of the flap. Their horizontal edges will serve as a benchmark for the following steps.

16. Form an oblique valley fold by bringing, upwards and from left to right, the lower left vertex of the two upper flaps on the upper edge of the accordion. Mark strongly.
The fold is carried out through three layers.

17. Form an oblique valley fold by bringing, downwards and from right to left, the uper right vertex of the shape on the upper edge of the accordion. Mark strongly.

18. Flip the fold from right to left.
We have a trapezoidal shape with a small horizontal lower side and a large horizontal upperside. On the top of the folding, there is a small triangular flap on the left and a triangular flap on the right. These two single thickness flaps have a vertical edge.

19. Using the right vertical edge of the left triangular flap as a benchmark, form a vertical valley fold by bringing the left side of the trapezoid from left to right. The fold runs along the vertical side of the triangle. Mark the fold well. Unfold.
This is a preparatory fold which will be used later on to form one side of the box.

20. Using the left vertical edge of the right triangular flap as a benchmark, form a vertical valley fold by bringing the right side of the trapezoid from left to right. The fold runs along the vertical side of the triangle. Mark the fold well. Unfold.
This is a preparatory fold which will be used later on to form one side of the box

21. Form an oblique valley fold by bringing, downwards and from right to left, the upper right vertex of the shape on the horizontal edge of the right triangle. Mark strongly.
The fold starts at the intersection between the upper edge of the shape and the vertical fold made in [step 12]. This new triangle of thickness 2 has one vertical side. The other side comes along the horizontal side of the adjacent triangle.

22. Form an oblique valley fold by bringing, downwards and from left to right, the upper left vertex of the shape on the horizontal edge of the left triangle. Mark strongly.
The fold starts at the intersection between the upper edge of the shape and the vertical fold made in [step 13]. This new triangle of thickness 2 has one vertical side. The other side comes along the horizontal side of the adjacent triangle.

23. Using the horizontal fold existing between the two families of triangles, fold upwards the flap carrying the two simple triangles.
When folding back the bottom flap upon the top flap, pay attention to keep flat the 4 triangles.
You get a 6 sided shape. On top of it, you will find a large pocket. Its cover is a little bit thick. The bottom has only a single thickness.


24. Put your thumbs in the pocket, on the inside oblique folds. Push until the pocket lid snaps into a vertical position. The sides of the box are formed in the same movement, also becoming vertical.

25. Using the oblique folds made at [step 19] and [step 20], pinch the corners so that you obtain two tips, one towards the left, the other one towards the right. The rectangular part linking both of them becomes vertical.
Hold the tips tightly. On both sides of the box,you can see two triangular pockets.

26. Slide the left tip deep into the left triangular pocket.

27. Slide the right tip deep into the right triangular pocket.

Here is a nice rectangular box. It is possible to use a square sheet of paper. If you use two-tone paper, you will get a nice bi-colored box. Have a try !

1 file to download
Contents File
Cross Box - PDF file ML-Box06Ang.pdf
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