How to make a bow is of interest to many people. Indeed archery is one of the most exciting sports. It is not at all necessary to deal with it professionally in order to enjoy shooting at targets. You can go out with friends to nature, and shoot at homemade targets at a short distance. For these purposes, a homemade onion may well come in handy .-
How to make onions at home
To get started, prepare all the materials needed to create the onion. You will need the actual piece of wood from which the future base for onions will be made. Ash, white acacia or maple are best suited for these purposes. For the manufacture of onions you need to use high-quality dried wood, without any knots and other defects. Also prepare a bowstring that can be made from dacron or twisted linen thread. Any bow constructively consists of two parts - the handle and shoulders. The handle is the central part of the bow, it is with the protrusion of the handle that the arrow begins to fly.
Depending on the length of the arms, the length of the bow and arrow also changes. If the range of a person’s hands is 137-150 cm, the length of the arrow should be 55-60 cm and the length of the bow is 137-152 cm. For people with a range of hands from 150 to 165 cm, you need to select a bow 152-160 cm long and arrows 60-66 cm. People with a hand span of 167-180 cm usually pick a bow 160-180 cm long for themselves, while the length of the arrow is 66-70 cm.
How to make a bow yourself
We begin to cut the body of the future onion. For this, an arc is cut out of wood, which in the future will become the onion frame. Around the middle of the arc, provide a handle for the bow, in the future it will be more convenient for you to use it. You also need to make rounded grooves for a stretched bowstring. It is most convenient to cut with a rasp. Then, on the back of the onion, two layers of veneer with an average thickness of 0.5 mm should be glued. Now round the ends and make small grooves for the bowstring .-
A little bit about the bowstring. If the tension force is less than 16 kg, for the manufacture of a bowstring, you can use linen twisted threads, which are used in saddlery production. If the tension force is more than 16 kg, you need to use a thread made of lavsan. Now we go directly to the fastening of the bowstring. To correctly calculate the length of the bowstring, for this, subtract 4-5 centimeters from the length of the bow. The resulting figure will be the length of the bowstring in centimeters. More accurately determine the length of the bowstring using practical tests.
To make a bowstring, do the following. We take a long bar, drive two nails into it at a distance of 150 cm from each other. Now the free end of the thread without a knot should be fixed on one stud of the device, and wind the thread in a circle. On average, make 5-6 turns for flax yarn, and 50 turns for lavsan yarn. Winding the thread, make sure that it goes without sagging and is evenly stretched.
In the future, the resulting bowstring in this way will last you much longer. Then cut the thread and tie the loose ends, and then divide the thread into two strands. At a distance of 8-10 cm, the middle of each formed strand should be wrapped with a dense kapron thread, after which, without removing the bowstring, wrap its ends. Thus, you get two loops with which the bow is attached to the bow. After the loops are ready, make sure that the length of the bowstring matches the length of the bow.
On average, the distance from the handle to the bowstring is 20-21 cm.
After the bowstring is pulled, you need to check the bow on the stand. To do this, it must be fixed on a vertical surface, and check the tension and bending of the shoulders. Gradually increasing the tension of the bowstring, you need to check the reliability of the made bow, while you need to monitor the uniformity and symmetry of the bending of his shoulders. It is especially necessary to ensure that the tips of the shoulders do not bend too much, otherwise the bow may break.
Checking the tension of the bowstring, make sure that the bowstring is installed correctly. If the bowstring deviates from the bow axis, this may mean bow deformation. You can try to correct the deformation by cutting the opposite side of the deformed shoulder. After adjusting the bowstring, you can notice the tension of the bowstring using a dynamometer. The bow tension should be 10-12 kg for a beginner archer and 16-17 kg for an adult and experienced athlete.
After all the onion tuning procedures, you can finish it. First of all, you need to make it more convenient - for this you need to give the handle the most optimal shape. To do this, you need to attach a guide protrusion on the left side of the handle, the length of which should be 20-30 mm, and the width - 10 mm. The shape of the protrusion is a small inclined semicircle - so the arrow will not jump off.
After making the bow, you can start making arrows. For the manufacture of arrows for onions, dried wood is used - spruce, pine, birch. The boom tip is made of solid steel. For balance, on the back of the boom you need to stick a plate of plastic or textolite, in which a slot is made corresponding to the diameter of the bowstring. The dimensions of the plate are 2 mm wide and 7 mm long. To optimize flights, a stabilizer must be attached to the rear arrowhead - usually a goose, eagle, swan or turkey feather.
When the arrow is ready, you need to center it. If the center of gravity of the arrow is closer to its tail, its flight will be unstable and the arrow will wag. On the contrary, if the center of gravity is too shifted to the front of it, the arrow will, as they say, "nod".
You can center the arrow like this. First you need to find the midpoint of the arrow, and then at a distance of 1 cm from it towards the tip on the arrow you need to make a mark. This will be the center of gravity. In order for the front and rear of the boom to have the same weight, the mass of the boom can be changed by changing the weight of the boom tip.
How to make a bow with your own hands at home can be seen in this video.
how to make a recursive bow
That's all, now you know how to make a bow.