In the manufacture of good onions is important such a component as a high-quality string. In terms of survival, you can make it out of fishing line or rope, but for constant use it is worth spending a little free time and effort to make a good bowstring at home. How to make a bowstring for the bow, will be described in the information below.
- What can you make a bowstring for the bow
- 2 How to make a bowstring at home
- 3How to make a bowstring for a crossbow
- 4How to make a bowstring for a bow: video
What can you make a bowstring for the bow
First you need to clarify what the string is made of: it uses kapron, polyester, kevlar, propylene yarn or dacron. Synthetic fiber will be the basis for the string, it is not recommended to use a twisted thread, because it will stretch a lot. For winding used nylon, silk or nylon thread.
A device for winding a bowstring can be made of a wooden bar 15-20 cm wide. At each end of the plate two round smooth sticks about 20 cm long and 1 cm in diameter are attached. These sticks are inserted into the holes drilled in advance at a distance equal to the length of the future string. The thicker the diameter of the sticks, the easier it will be to wind the thread. The second device that will be needed for winding the thread is a reel of a sewing machine (bobbin) into which Kevlar, polyester or other material for a bowstring is inserted.
In places where the string will be put on the bow, it is necessary to make a protective winding. To make these ears more comfortable, you can use additional spacers for the mounted sticks. Winding is carried out by tight coils, located as close as possible to each other. Usually those who make the winding for the first time ignore this recommendation, as a result of which, when firing, the coils begin to shift, then the thread wears off and breaks at the most unexpected moment.
Then you can start winding the bowstring at home:
- Using a device for winding, the thread, pre-coated with glue, is pulled over the pins with a slight tension. For a thick thread, two turns are sufficient; for a thin thread, it will be necessary to make from ten to thirty turns, the main thing is that the diameter of the string results in at least 2 mm.
- The ends of the threads are tied into a knot and glued with glue. Rubber material should be used for the nylon material, and PVA glue should be used for the kevlar thread. Winding should be done before the glue dries.
- Then, using a bobbin with thread, we begin to wind the strained threads with dense turns. When you get ten centimeters of winding, the threads are moved with rods so that the wrapped part is at the ends of the future string. Details can be found in the photo.
- Having receded about ten centimeters, we form loops, starting to wind both sides of the thread wound on the pins together.
- After that, the middle of the bowstring is wrapped with a dense double layer, while coating the base with it. This part of the winding should be about 15 cm long.
- The ends of the thread must be well sealed to prevent unwinding.
When shooting, the arrow of the bow lays down exactly in the middle of the winding, it is necessary to insert rubber rings opposite the bow of the bow, between which the arrow will be inserted.
How to make a string for a crossbow
You can make a string for a crossbow from synthetic threads used for onions, or from a metal cable with a thickness of up to 2.5 mm. However, the metal cable is designed for static loads, because when dynamic it collapses and stretches faster. In addition, it significantly adds weight to the crossbow.
For winding crossbow strings, you can use a similar machine, as for pulling onions. The winding is made in a circular motion, evenly pulling the thread. The number of threads wound depends on the strength of the crossbow. When the string is wound, the loops and middle are wound as described earlier. Safety winding can be made of twisted synthetic yarn or cotton thread. If the string is made of Kevlar, the loops are reinforced by the additional interlacing of the spacer from the threads into the string or simply by increasing the threads in the braid of the loop.
Thus, both loops are wrapped, and the safety winding in the middle of the string is produced when being put on the crossbow. It should not be too tight, which will extend the service life. To save the thread from damage, it is necessary to rub a small amount of beeswax, which has a water-repellent effect. If you overdo it with grease wax, the thread weight will increase, which will lead to a decrease in the speed of flight of the arrow made by the crossbow.
It should be borne in mind that when using a kevlar thread for a crossbow, its length must be greater than the threads of Dacron or Dacron.