How to make windmills with cardboard

1, take a piece of A4 paper. If there is any other paper, it will do. Fold an angle along 45, and this is the shape of the diagram.

2. Fold off the extra rectangular paper on it, and then cut it off with a knife.

3. Then fold it in half in the middle of the longest side to form a smaller triangle.

4. Cut each side of the triangle to form an independent triangle, but leave a distance of 1cm in the middle. Don't cut. If you cut it open, it will really become a triangle. The midpoint is the center of the windmill.

5. Then open the paper. At this point, the paper is cut diagonally, but remember that the middle 1cm is connected with each other.

6, with a thumbtack, upward from the bottom midpoint. If there are no thumbtacks, you can also use paper clips to straighten them.

7. Starting from any triangle, put an angle on the pushpin.

8. Put the other three triangles on the pushpin in turn. The windmill is ready! Run against the wind!

Extended data:

Manufacturing method of hexagonal windmill;

1. Prepare raw materials: a plastic rod with a small hole at one end and six square colored papers.

2. Fold all the colored paper in half once, as shown in the figure below.

3. Fold all the folded colored papers together and pierce a corner with a pin, as shown in the figure below.

4. Bend this corner again and continue to pierce the right angle, as shown in the figure below.

5. Pass the needle through the small hole of the plastic rod, as shown in the figure below.

6. Spread out six folded colored papers in turn, as shown in the figure below.

7. Finally, fix the shape with a glue stick to avoid looseness and deformation, as shown in the following figure.