What made you want to try making something like a "spring" out of paper?
That's because I've gotten a little deeper into the world of paper.
First of all, it is good to know that paper has "eyes".
The grain of paper is the same as the grain of wood.
The direction in which the paper fibers run.
There is an explanation on Takeo's site
http://takeopaper.com/about_paper/line/index.html
This is the direction in which the pulp, together with moisture, flows through the machine when a large amount of paper is produced by the machine.
In the case of papermaking, which involves melting Japanese paper and milk cartons into paper,
You can't see the water because the water flows in all directions.
In other words, it is difficult to make a spring with Japanese paper.
In the photo above, the one on the left says ``the eyes are running along the long side.'' By the way, the one on the right is ``short hands.''
as a side note
When drawing a development diagram of a boxed object, draw it in the longitudinal direction.
The reason is that the three-dimensional object is finished more strongly.
The card paper in the photo above has eyes running in the direction of the arrow.
If you roll it in the direction of your eyes, it will be easier to roll. It's easy to understand if you think of it as "sumaki" when making seaweed rolls.
The ease of breaking is also different. Give it a try.
Now let's make something like a spring.
First, fold the card paper into a shape like the one in the photo.
Completion of the jump table.
Please pay attention to the "paper grain".
Fold both ends at 45 degrees.
then a small one
Also prepared by folding long thin paper alternately
Have you ever done it with a straw outer bag?
after that
Put these on a big jumping platform
Hold the edge and quickly pull the holding hand toward you! and
It will fly, so give it a try.
(Holding the paper that is in contact with the desk with the other hand works well.)
It is light and flies more than 30 centimeters.
that's all.
Good luck today