Boomerang for Russia is a very exotic weapon. At its core, boomerangs are sports weapons and are not qualified or prohibited in any way. Indeed, this is not a homemade crossbow and forbidding to throw a boomerang at a speed more than permitted by law - this is insanity and who should be standardized, a boomerang thrower? :)

So the boomerang is ignored by the law, as well as a homemade sling. Therefore, you can safely make and throw boomerangs without violating Russian law. The main thing is to ensure that the tested boomerang does not cause damage and does not fly to your head when returning.

The dimensions of the boomerang are not large, the distance between the edges is from 30 to 50 cm. Despite the small size, the striking ability of a properly launched boomerang is very high.

Boomerang drawings

Homemade boomerang is made of durable, dense wood. Under normal conditions, it is best to take multilayer plywood with a thickness of 8-10 cm. It is better to choose imported waterproof plywood, it, unlike Russian, does not delaminate and holds a blow well when a boomerang hits a target or a random tree. For small boomerangs, you can take a large kitchen cutting board as a starting material. It is a finely seasoned dry wood that lends itself well to being processed.

Look at the boomerang drawing below.

The coordinate grid has a cell size of 5x5 cm, scale it to the workpiece and you can start making a boomerang.

Here is another version of the boomerang drawing, it is adapted for manufacturing from plywood and has a simple profile.

Such a boomerang is much easier and faster to manufacture, and flies no worse than a boomerang with a complex streamlined profile.

As a child, we made boomerangs according to the drawings of the Modeler Constructor and the Young Technician. An example of such a drawing is below.

I must say that even several boomerangs made according to one drawing have their own characteristic flight features and throw features.

Among the drawings of boomerangs, there are also very original ones, for example, stylized as "Batman".

By the way, watch the video of throwing such a boomerang - it flies very well!

And these are drawings of a three-blade boomerang.

When making this, the easiest way is to make each blade separately, and then connect them in the center using overhead elements.

Wood is not the only material for manufacturing, it is simply the cheapest and can be processed well. But, you can use durable plastic or metal.

How to make a boomerang with your own hands

First you need to transfer the outline of a homemade boomerang to plywood or the material from which you will make the boomerang and cut it out.

The easiest way to do this is with a paper template printed on ordinary office paper - here's an example of what fit on one A4 sheet.

The second part is printed separately and used after the stroke of the first.

An ordinary manual jigsaw works well for sawing. Slowly, but qualitatively, however, you can use the electric one - everything is in your hands.

The profile of the boomerang is controlled using counter patterns as in the figure below.

However, for simplified models according to those drawings of boomerangs that have a flat bottom and top, you can do without counter patterns - just draw the edges of the profiles, fortunately, the descents are not difficult.

Processing is carried out with sandpaper, first we set coarse-grained, then finer. This work is best done outdoors - there is a lot of wood dust from sanding! A grinder will not hurt here, with its help you can make a boomerang in 30 minutes. But manually it can take a whole day!

After manufacturing, the boomerang is varnished. Yacht varnish has proven itself very well - it keeps well, gives the texture to the tree and holds the shock load quite well. The boomerang is covered with three layers of varnish with an exposure between varnishing procedures.

If you want to apply a drawing on a boomerang, then it is done after the first varnishing. Acrylic paints from a regular office supply store work well.

How to launch a boomerang

The boomerang is launched with the right hand, the throw is made at an angle of 10 to 35 degrees. The flight path depends on the throw angle. If the launch angle exceeds 45 degrees, then the boomerang will shoot up sharply and then also abruptly return along an almost vertical trajectory to your head.

The boomerang throw must be strong enough, while in the final phase of the throw, it is necessary to give the projectile a twisting moment with a sharp movement of the brush.

The flight of a boomerang is highly dependent on the wind, it is better to throw against the wind, then the wind will help the boomerang return. For accuracy rolls, it is best to use a calm day.

Watch the boomerang video.

Pay attention to the fact that catching a boomerang is carried out with the help of cotton with both hands! When trying to catch a boomerang with one hand, you can hurt your fingers!

Like a sling, a homemade boomerang requires a lot of practical experience to accurately hit a target. This is not a rifle or a crossbow, much depends on the weather conditions and the ability to correctly throw a boomerang in these conditions.

Here is a recording of boomerang flights from a quadrocopter.

As you can see, with proper skill, the boomerang always returns.

What is interesting boomerang for a survivalist

First, its uniqueness. The law does not prohibit the manufacture of a boomerang and a sling, you can safely train with them anywhere. Boomerang develops coordination and has a good effect on general sports training.

In the case of a BP, the boomerang will not be perceived as a weapon, but the kinetics of its impact is very high, precisely because of the angular velocity of rotation of the ends of the boomerang.

The boomerang's ability to return if it misses is very handy when hunting birds. Of course, I mean hunting during survival, and not going out with guns and vodka at the usual time.

While flying through a flock of birds or over water - a boomerang can knock down more than one target, the size of a small bird is not so large as to stop it, add to this the return in case of a miss and it becomes clear - if you more or less own a boomerang, then hunting with he will be more comfortable than with a bow or crossbow. After all, after a miss, arrows and bolts must be sought, and even when hit, they tend to break. And the boomerang - wiped it with a cloth and is ready for battle again! :)

The video below shows the launch of a homemade boomerang that is already 20 years old, and during these years it flew on weekends, and did not hang on the wall.

Yes, and making a boomerang is much easier than a powerful bow or crossbow.

Today we will talk about how to make a boomerang with your own hands at home from improvised materials. We will also consider the methods and technologies for manufacturing boomerangs of various designs with visual drawings and illustrations.

The wings of a boomerang - when they spin in the air - are able to generate enough lift. This is due to the fact that the wings have a special aerodynamic shape due to their angle of inclination and sloping bottom.

But phenomenal in the flight of a boomerang is a process known as gyroscope precession - an effect in which a physical body changes the direction of its movement - a key moment in which the return movement of the boomerang is ensured towards the person who threw it.

It is worth noting that the technique with the return of a combat boomerang was used by warriors and hunters solely for training purposes, well, or as a method of some kind of intimidation.

When a boomerang spins in flight, one wing is actually moving slightly faster than the airflow. And since this wing has a higher speed, then, accordingly, the lifting force under it acts stronger. The result of this is an unbalanced effort (the phenomenon of precession), which gradually returns the boomerang.

In other words: The difference in lift between the two sides of the boomerang produces a consequent torque that reverses the turn. Therefore, the boomerang soars in the air for so long and returns back, describing an arc

How does a boomerang work - it is taken in the hand in a certain way and rushes with force at a certain angle perpendicularly upwards, and the stronger the twisting, the farther, the more powerful the throw and return to the starting point will be. So, you swing, throw a boomerang, but at the last moment do not let go of the brush to the end, but abruptly, as it were, hold it and pull it back, as they say, “shake the thermometer”.
With a sufficiently powerful throw, at a distance of one hundred meters, you can freely knock out a dozing rabbit or knock down a partridge on a lonely standing palm tree. If you didn’t hit, it’s not scary, the boomerang will fly back, just have time to bounce (humor) Well, seriously, we will not analyze the processes that lead the boomerang’s flight to its hit accuracy and return to the throw point in the absence of such. Our goal is to correctly manufacture this formidable weapon of the past.

To make a boomerang, hardwoods are needed, such as oak, birch, beech, linden, etc. To give greater aerodynamics and strength, you can glue the boomerang with fiberglass with epoxy resin, then sand and polish it. The profile needs to be made slightly plano-convex, but do not overdo it, 8-12% is enough

You will need to make a boomerang with your own hands:

Cardboard sheet;
Plywood or wood;
Varnish or paint;
Jigsaw;
Plane;
Sandpaper.

First of all, you need to draw the selected boomerang model exactly in full size on a thick and thin sheet of cardboard. It is recommended to choose a sheet size of 50x60 cm. After that, a grid with a square side of 50 mm must be transferred to the cardboard. From the resulting template, we cut a blank from plywood. Its thickness is 10 mm.

Now you need to process the workpiece. This should be done with a small planer in a vise or with the help of a device, which is shown in the image (d). The boomerang needs to be planed, starting from the middle, moving towards the edges of the blades. Their end should result in a thickness of 6 mm. The blades must be exactly the same in shape. To simplify the task, you can make counter-templates of the blades from plywood and apply them to check the correctness of the forms.

The surface should be perfectly smooth, so the next step is sanding. You can use sandpaper for this. After grinding, the almost finished boomerang is covered with a primer, and then with varnish or paint. It is best to use bright paint so that the boomerang can be seen from afar and is easier to find when it falls. In addition, parquet varnish can be used for coating, which preserves the aesthetic structure of the product.

So it’s relatively easy to make a boomerang with your own hands in an hour or two. If possible, it is recommended to make a boomerang out of wood. For this, as a rule, bent branches and roots are used. It is important that the tree is dense, heavy and well dried. For the manufacture of a boomerang suitable: oak, birch, beech, linden. The manufacturing process is exactly the same as in the case of plywood. But it should be remembered that the tree deteriorates much faster than plywood, so it must be varnished or painted especially carefully.

If you followed all the rules when creating a boomerang, then it will have excellent flight qualities and a beautiful appearance. We figured out how to make a boomerang with our own hands, now we need to figure out how to launch it correctly.

Launching a boomerang for the first time, despite all its apparent simplicity, is quite dangerous due to unpredictability, so some care and attention will be required. You can quite hit someone with a boomerang, so experiments should not be started in crowded places. The optimal place for training agility and accuracy is a meadow or clearing with a radius of 40-60 meters (the more, the better). In the city, such a clearing can be a football field or a wasteland.

The launch of a boomerang is specific in that the trajectory of its flight is a figure eight. Therefore, a person throwing a boomerang should only throw it from the center of the place chosen for training. The projectile will fly forward, making a loop in front of the thrower. He will noticeably return and make the same loop already behind the thrower, thereby forming a figure eight, the execution of which depends on several parameters - the strength of the throw, the quality of the boomerang, the experience of the thrower.

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The boomerang has two main surfaces. The convex front side, on which, as a rule, a pattern is applied, creates its own effects when rotated. The back side, in most cases, is flat, you can also see the pattern on it, but with proper throwing, you can usually see only the front side.
It is customary to hold a boomerang like this: the thumb always lies on the front side. Holding a boomerang correctly means holding it facing you and seeing the pattern well.
The boomerang can be held with both the wing back and the wing forward. This is not fundamental and in any case it is correct - as it will be more convenient for you.

Boomerangs are light and heavy. You can determine the type yourself - the hand will tell you which boomerang you are holding.
A light boomerang in the hand must be fixed with three fingers - it is clamped with the middle, thumb and forefinger (it should be recalled that the thumb, with a correct grip, should always lie on the front side).

It is rather difficult to hold a heavy boomerang with three fingers, so it must be fixed in a fist, up to the little finger, i.e. the grip comes out with four fingers, so the fixation is quite rigid. You can grab deeper, but when throwing a boomerang, then it will be inconvenient to release, so it is not recommended to grab heavy boomerangs deeper than four fingers.

Many beginners, on a subconscious level, launch a boomerang, tilting it like a sickle with which they cut grass, almost parallel to the ground. This is completely wrong. In a boomerang, the aerodynamics are designed so that to throw it correctly means to throw it almost perpendicular to the horizon, at the same time, the slope to the horizon line should be to the right of the imaginary perpendicular. The boomerang should be released during the throw at an angle of no more than 45 ° to the horizon line.

You can also come to this experimentally on your own - with an excessive tilt, the boomerang will take off sharply upwards, after which it will also dive sharply to the ground in front of the thrower. If the throw is made at an angle of more than 45 °, then the boomerang will never even come close to the thrower.

The boomerang should be thrown sharply and strongly. When launching a boomerang, one must take into account the fact that the projectile requires force not only to fly from the thrower, but also to return and loop behind the thrower. Therefore, you should throw extremely hard and sharply, especially if you use a real wooden boomerang for training, and not a toy plastic copy. As a rule, the first throws are timid and cautious, especially if a woman or a child is throwing. But do not be afraid! Any high-quality boomerang is designed for a powerful throw, because if you throw it weakly, it will quickly fall somewhere along the trajectory, which is not very good for him.

It is necessary to throw a boomerang directly in front of you, looking and focusing on the horizon line. There is no need to throw the boomerang up - it is better to throw it straight ahead, because the design of the projectile is such that it will gain the required height on its own.
During the first throws, a situation may arise that, as it may seem to you, you are throwing a boomerang sharply and strongly, but it still flies smoothly, without twisting as required. In this case, you need to master some spinning skills. If you throw the projectile correctly, it will spin as fast as a propeller - the pattern will merge into a solid circle, the blades will not be visible. To ensure maximum spin, a good grip is essential. In addition, the boomerang should not be pushed too hard in the fist.

There are many ways to spin a boomerang, but we will focus on the simplest and most common.
So, we swing and throw sharply, but at the very last second before the boomerang comes out, you do not let go of your hand to the end, but quickly stop it, as if pulling it back. Many of us used a mercury thermometer, so this movement is familiar to everyone - it completely repeats the shaking of the thermometer.
With such a throw, we leave a kind of footboard for the boomerang, we hook the running leg and he, stumbling, rolls head over heels. A boomerang twisted with such a stopper will twist more strongly.

We figured out how to launch a boomerang, but you should also take into account the wind. The wind is almost the main factor that affects the flight path of not only a boomerang, but also all aircraft projectiles and vehicles. Its influence should be taken into account when throwing no less than the strength of the throw and the correct grip. If the wind is very strong, sharply changing direction and strength (intermittent), it is better to postpone the training and work out the theoretical part again.

It is better to start training in calm calm weather or with a slight wind that does not change direction. If you are throwing in the wind, it is recommended that you throw towards the wind a little to the right of its movement. With such a throw, the wind will help the boomerang return to the thrower. Among other things, the wind has a strong influence on the accuracy of the return of the projectile, because the behavior of any aircraft depends on the available air currents. You can make friends with the wind, but it comes only with experience and after numerous trainings. From the first time to comprehend this art is simply impossible.

For sporting and recreational purposes, much lighter "shells" are currently used. They are practically safe, although some precautions must be taken when launching them. Alder five-layer plywood 6 mm thick must be recognized as the best material for the manufacture of a sports boomerang (for smaller sizes that differ significantly from those indicated in our figures, it is necessary to find a correspondingly thinner material). After processing the sheet blank along the contour, it is carefully profiled.

By the way, all the flight properties of the future boomerang largely depend on the last operation, the thoroughness of its implementation and accuracy, so it’s better not to spare time and, in case of failure, start working again. If the profiling of the boomerang turned out to be "five", they are accepted for grinding and varnishing the wood. Finishing - bright oil or nitro enamels. If there are no significant deviations in shape from those indicated in the figures, additional debugging is not required.

It should be noted right away that a combat projectile, originally created by distant ancestors, called a boomerang, is not at all necessarily returned. Special types of boomerangs were not calculated at all to enter the reverse trajectory and were called so because they had the main classification features - rotation in flight around the transverse axis and lengthening the flight range due to aerodynamic (gliding) properties. The returned boomerangs served mainly for hunting small animals and birds.

For sporting and recreational purposes, much lighter "shells" are currently used. They are practically safe, although some precautions must be taken when launching them. Alder five-layer plywood 6 mm thick must be recognized as the best material for the manufacture of a sports boomerang (for smaller sizes that differ significantly from those indicated in our figures, it is necessary to find a correspondingly thinner material).
After processing the sheet blank along the contour, it is carefully profiled. By the way, all the flight properties of the future boomerang largely depend on the last operation, the thoroughness of its implementation and accuracy, so it’s better not to spare time and, in case of failure, start working again. If the profiling of the boomerang turned out to be "five", they are accepted for grinding and varnishing the wood. Finishing - bright oil or nitro enamels. If there are no significant deviations in shape from those indicated in the figures, additional debugging is not required.
When launching a boomerang, use the practical advice of our publication, reflected in the figures. In conclusion - about the possible circuit options. The search for interesting solutions is not limited to the choice of shape and size. To a large extent, flight performance depends on the material of the boomerang. So, for example, a multi-blade "chamomile" scheme in combination with the use of foam can lead to the creation of ... a room version, the flight range of which does not exceed three meters.

Take a sheet of thick paper and apply a grid on it with a square side equal to 50 mm. The side of the boomerang facing the reader is convex. Carefully transfer the contours of the model from the drawing and cut it out. You have received the template. Check the symmetry of the shoulders by bending it along the OA line. The contours of the shoulders must match exactly. The best and perhaps the most affordable material for making a boomerang is plywood. Glue the template to the plywood sheet with rubber glue so that the outer layers of plywood are perpendicular to the OA axis. Using a jigsaw, cut out the outlines of the arms of the boomerang.

All subsequent processing is done on one side only. The other side should remain flat. Using a flat file and calipers, achieve a smooth decrease in thickness from the middle to the ends. Once you've done that, start profiling. This is perhaps the most important part of the job. Cut out counter-templates from tin or thin plywood for each section indicated in the figure. Profiling is done with semi-circular and flat files, and then clean the entire surface with sandpaper. Round off all sharp edges. .

Treat the surface of each of the shoulders carefully, the flight qualities of the boomerang will depend on this. Frequently check the correctness of the resulting cross-sections with counter-templates. It is also very important to carefully balance the boomerang. To do this, hang it on a thread,
attaching it to the section OA: none of the arms should outweigh. If one shoulder is heavier than the other, the cause must be established. This can be caused either by improper processing or uneven plywood. In the first case, balance is achieved by filing a heavier shoulder, in the second - by inserting a small lead rivet into the edges of the light shoulder. The place of termination must be carefully leveled with the plane of the shoulder.

We warn you: a flying boomerang poses a danger not only to the thrower himself, but also to those around him. It's best to run it on a big one. An open area or lawn, removing spectators as far as possible. To make the model more visible, apply bright stripes of various colors on the shoulders. The necessary water resistance can be given to it by covering the surface of the shoulders with a colorless varnish. Paint the finished boomerang several times with bright oil or enamel paint.

How to make three and four bladed boomerangs with your own hands

Production material - medium and heavy varieties of wood, oak, linden, birch, beech, etc. In fact, it is difficult and not advisable to use plywood for this scheme. In the middle of the two blades, grooves are cut on different sides, after which they are glued together with PVA glue or wood glue, in general, with any sufficiently strong glue for wood. For greater strength, you can connect with small screws.

Usually they propose to make mainly L-shaped boomerangs. In my experience, L-shaped boomerangs are significantly inferior to + (cruciform) in absolutely all characteristics. They don't fly that far. They must be thrown at a strictly defined angle with one specific force, so that he would return exactly back. The time spent in the air is one and a half times less.

The flight of a boomerang is an amazing sight. With a strong throw, in flight, he describes a large loop, flying far up - forward and back. If you throw a stone with exactly this force, then it will not fly even a third of how much a good boomerang flies. Boomerang can be taken with you for outdoor activities. You will get a lot of interest from such a holiday. You can work with it as with a sports equipment during physical education and sports, developing arm muscles, coordination of movements, etc.

I recommend launching a boomerang, especially a sports one, only in large open areas, in little windy weather, in the absence of people nearby. If there are buildings nearby, then the glass may be broken or the projectile will fly somewhere on the roof. If people walk nearby, they can get a teapot. Above are diagrams of amateur boomerangs. Sports are large in size and weight.

How to make the perfect do-it-yourself boomerang:

The blades should be made wider as this increases the number of reinolds.

Lengthening the blades to do more, this will reduce the inductive reactance.

Concentrate the mass at the ends of the blades, this increases the supply of rotational energy

Reduce the number of blades, this will reduce the harmful interaction of the blades

If you do all this, then you will get up to 20% increase in flight data on everything.

It turns out a diagram of a two-blade straight boomerang, similar to a helicopter propeller. But a two-bladed one will be absolutely unstable, and the use of a stabilization scheme is not justified. The three-blade circuit meets all requirements. If the blades are swept back, then the inductive drag decreases at high angles of attack, this happens at the moment of changing the flight path. And the energy of rotation at supercritical angles of attack will not be lost.

It is not difficult to make a boomerang at home on your own. In this article we will tell you about the manufacture of several types of these flying objects.

Did you know that not all boomerangs return to their owner after being thrown? When hunting large animals such as kangaroos, the Australian Aborigines used non-returning boomerangs. They threw such a boomerang almost horizontally. And he himself was curved less than a modern counterpart and reached a length of up to 1 meter.
To date, the boomerang is not used for practical purposes. It is used to develop manual dexterity or just for fun. The device is generally not tricky. Great for learning the basics of aerodynamics.

Classic L-shaped boomerang

Material for production: thin plywood.

First, let's prepare a template. Take thick paper and mark it with a square grid in 50 mm increments. In the diagram, the convex side is facing the reader. Transfer the outlines of the boomerang from the diagram to the prepared sheet of paper and cut it out. To check the symmetry of the resulting template, bend it along the OA axis. Check that both sides of the boomerang match.

Now glue the template onto the plywood sheet. In this case, the outer layers of plywood must remain perpendicular to the OA axis. Cut the boomerang with a jigsaw along the contour. Please note that finishing must be done only from the side considered in the diagram. Leave a flat surface on the bottom. In order for the thickness of the boomerang to smoothly transition from the middle to the edge, use a flat file.

For each section considered in the figure, make a counter-template from tin or thin plywood. Next, with the same flat file (or semicircular), make a profiling and sand the surface. The edges must be carefully rounded. Do not forget to constantly compare the profiles of the boomerang sections with the translucent templates throughout the procedure.

It remains only to balance the boomerang. To do this, along the OA axis, you need to attach a thread to it and then hang the resulting structure. None of the "wings" of the boomerang should outweigh. If this situation still happened, correct the balance of the model by attaching a small lead rivet to the "wing" that is lighter.
All is ready. Now you can start decorating the boomerang with its further varnishing.

cruciform boomerang

Material for manufacturing: linden, oak, birch or other heavy wood.

Two-blade variant

According to the above diagram, make boomerang blades. Cut grooves in them. Then glue the "wings", or connect them with screws, making sure that the balance is observed.

Three-blade variant

The range and flight time of such a boomerang increase from 3 to 8 percent.
If you do not have experience with a boomerang, then it is desirable that the length of the blades in both versions of the scheme does not exceed 25-30 cm.

safe boomerang

Production material: paper.
This option is absolutely safe for others. Making a boomerang out of paper is extremely simple. As a result, you will get a boomerang that duplicates the principle of the wooden prototype. Following the diagram, cut out the blank from paper.

Bend the edges of the blades towards you. If you are left-handed, use the opposite direction of the fold.

Well, you have achieved the desired result, as you can see, making a boomerang at home turns out to be very simple, the main thing is to really want to.

Safety

Making a boomerang entails elementary safety rules for its use. It is recommended to use a boomerang in large open areas in calm weather. There should be no people nearby. If you notice someone, you need to warn him about your actions.

Attention! Using a boomerang without observing safety precautions may result in criminal penalties. The information in this article serves exclusively peaceful purposes. Any person using the obtained data for criminal purposes is fully responsible for their actions.

If you are interested in this topic, then let me suggest a few more:

And finally, on the video, how to make a boomerang out of wood:

The long-awaited summer has finally arrived. Time for picnics, beach volleyball and fun activities. But, sometimes it happens that we get bored of playing football or riding bicycles while walking. How to be? What to think? How about making a boomerang and having an unusual free time?

If today we look at the history of the Egyptians, Indians, Moroccans and Navajo Indians, we will see that for these peoples the boomerang was not an object of entertainment, but a weapon with which they obtained their own food. To date, the boomerang is no longer a weapon, but an object of entertainment and interesting pastime.

So, let's get down to how you can make a boomerang yourself? What is the best material for this?

How to make a paper boomerang with your own hands?

Paper boomerang origami is a simple and quite interesting pastime. Your children will especially enjoy this activity. A simple origami boomerang scheme will allow you to fold not an ordinary figure, but a small toy that will not only fly, as a paper airplane does, but will be able to return back to your hand.

1. For a paper boomerang, you will need an A4 sheet of stationery paper. It is best to take a regular landscape sheet, which is slightly thicker than regular office paper. Fold the leaf in half lengthwise.

2. Take your scissors and cut along the fold line. Now all your work will be connected with only one half of the leaflet.

3. Fold the half of the leaf in half lengthwise again and iron the fold with the tips of your nails in order to fix the fold as strongly as possible. Now unfold the fold back.

4. Each of the halves of the sheet must be folded in half and again smooth out the fold with your fingers. Try to bend the halves of the sheet inward so that their edges do not reach the central fold by one or two millimeters.

5. Now you need to fold the sheet in half, but not along, but across. Remember that the seams after bending should not be outside, but inside.

6. When you have folded the paper in half and made sure the seams are in the middle, turn the shape so that the fold line is on top. Now you need to bend one and the second edge of the sheet into a triangle and walk along them with the tips of your nails. Thus, you will fix the folds.

7. After you have folded the triangles from the edges of the sheet, turn them back and bend inward. At the top you should get a triangle.

8. Now you need to unfold all origami to the state of stage four. The figure that you should get is displayed in the ninth diagram. Then unscrew the right half of the folded leaf, as shown in the tenth diagram. It is especially worth paying attention to the folds of the rhombus. Carefully run your fingers along the fold lines.

9 . According to scheme eleven, you must bend the triangle inward. Press your finger on the inside of the diamond. Then bend the sides inward, a triangle should come out of the rhombus, fold in half.

11. As a result, you should have a curved sheet in your hands, which in its outlines will resemble the shape of a boomerang.

12. Now you must first fold along the bottom of the sheet, and then do the same with the top of the origami.

13. Notice the overlap in the middle of the boomerang. Open the boomerang a little, pull out the lower left side and overlap it with the lower right side.

14. When you have an almost finished boomerang in your hands, you should pay attention to the position of the edges of the fold lines. This point should be taken into account, as it will play a decisive role during boomerang throws.

15. Now we form two corners along the edges. Triangle both ends of the boomerang, smooth with your fingernail, then unfold the triangles and fold them inward.

16. Boomerang can be decorated, made of colored paper or wood. The type, material and final shape of the boomerang will depend only on you and your imagination.

How to throw a boomerang?

You probably won’t succeed in throwing a boomerang correctly the first time, so don’t be upset and sad, be ready for training.

You need to throw a boomerang not with your whole hand, but only with a turn of your hand. During the throw, all the power should be transferred to the hands so that you can throw the boomerang as far as possible.

You should also hold the boomerang correctly, otherwise you will not be able to make a real throw. Hold the boomerang by the corner in the middle or by the edge. However, the position of the fold line should be taken into account. The fold line of the top of the boomerang should be at the top, under your fingers.

VIDEO. How to throw a boomerang?

How to make paper boomerang come back?

If the boomerang does not return to you, there are three reasons for this. The first reason is that you violated the boomerang manufacturing technology. The second reason is that you are holding the boomerang incorrectly. The third reason is at the heart of the throw itself. If you do not apply power to the hand, then the throw does not work correctly, therefore the boomerang has no power to return.

VIDEO. How to make a paper boomerang?

Previously, people needed to hunt in order to feed themselves and everyone who lives with them. They used many tools for hunting. Some of them are still hunted by mankind, others have become sports equipment, such as bows and crossbows. However, hunting was also carried out with the help of a boomerang. This is a very interesting projectile, now we will analyze in detail how to make a boomerang out of wood so that it looks exactly like a medieval weapon. And then we will create children's copies that are easy to make at home.

Why boomerang flies further than any thrown object

Many do not understand why boomerangs fly so far. It's all about the structure of their blades. They are made on the principle of an airplane wing. That is, the lower part is flat, and the upper one is convex. A different pressure is formed, which pushes this wing up, allowing it to stay in the air at a certain speed.

Why the boomerang is coming back

To understand how to make a returning boomerang, you can only study its geometry. With why he flies for so long, figured out. Now how is he coming back? The thing is that the boomerang blades are different in length, one is longer than the other by a sixth. However, if the boomerang is hung around a corner, you can see that the long blade will be the same in weight as the short one. Thus, when the boomerang rotates, its long blade receives more air resistance than the short one, because of this, with each rotation, it shifts to the side. Having realized the theory, you can begin to understand how to make a boomerang. now it remains to reproduce everything in the material.

What tree to make a boomerang

To craft such an ancient weapon, you need a solid material:

• Ash
• Pine
• Poplar

This will make a great boomerang. It is necessary to find a branch that resembles the letter "G" in shape. If a living branch is cut down, then it is impossible to immediately make a product from it. The material must dry, only after that it will be possible to start work. It takes a lot of time to dry a tree, so it’s worth preparing the material in advance, and then making a boomerang out of it. However, you can use a dry branch, or plywood a centimeter thick. However, here we are discussing how to make a boomerang out of wood, not plywood. Therefore, I will explain how to dry the workpiece.

Drying wood for boomerang production

After the necessary branch is cut down, its annual rings must be covered. To do this, use garden pitch, resin, you can even fill it with PVA glue. In general, this is done so that moisture does not escape very quickly through the cuts. So, the tree will dry out gradually and there will be no cracks in its structure. The material should dry for at least six months, and, in general, it would be nice to have a year. But you can reduce this time to a month. Let the workpiece lie “sealed” for a week, and then you need to remove the bark from it, leaving only a centimeter or two rims at the ends of the cuts. Then the material should lie down for another two weeks in a dry place, after which there is nothing left but to make a boomerang with your own hands and test its aerodynamics.

Starting production of a boomerang

We need a tool:

• File
• Sandpaper
• jigsaw
• Hacksaw

Our log needs to be cut in half to get two blanks similar to the letter "G". You can even make two boomerangs or more if the tree is not defective. In a word, we cut the material into blanks one centimeter thick. To accurately observe the shape and size of the product, you need to make a template for it. And we have no choice but to make a boomerang out of cardboard, or rather, it will be the outline of the product. After that, this template must be glued or simply attached to a wooden blank and carefully circled. Having a line for an accurate cut, you can not be afraid to cut off the excess, and we cut out our future throwing weapon along the contour. This can be done with a jigsaw or cut off the excess with a knife, the main thing is how to make a boomerang, and nothing to grind it.

Making the lifting force of a boomerang

When the contour is perfect, we proceed to the formation of convex parts so that the product can stay in the air. The picture shows all the thicknesses of the boomerang. You have to do it exactly like there. In order not to be mistaken with the dimensions on each section of the surface, you need to make patterns. Segments are cut from cardboard in which the shape is depicted, and the exact size of the bulge of a particular part of the boomerang. After that, cut out, creating patterns. Applying them, it is easy to see how much to grind.

Boomerang centering

We have mastered everything related to how to make a boomerang, but it still cannot fly as it should. In order for the product to return when thrown, it must be centered. To do this, you need to make a loop of thread, and thread a boomerang into it so that the blades look down. When the product is not centered, then its longer part outweighs, but it needs to hang perfectly even. This can be achieved by grinding the material, or by drilling a small hole in a smaller blade and pouring glue into it, insert a piece of lead. Thus, the workpiece is brought to perfect balance, after which all these ancient weapons are polished.

Coating the boomerang with a protective layer

When used, the boomerang often falls to the ground; the material from which it is made saves it from blows. It's made of solid wood! But in wet weather, how to make a boomerang protected from external influences of nature? After all, if its surface is “open”, then the view can significantly deteriorate. Dirt adheres well to untreated wood. But more importantly, moisture can deform the entire structure, or even create cracks. To secure the product, it must be waxed or varnished.

For waxing, wax is needed, it is mixed with turpentine, and then rubbed into the surface of the product. You can also simply rub in the wax using a rough cloth. But you need to do this, pressing hard with sharp movements so that the wax melts from friction and is absorbed into the wood.

Also, the surface can be varnished. It must be applied in a thin layer so that droplets do not form. After the first applied layer has dried, cover with a second one. So, four times is possible for the best protection of the product. When all the protection has dried, you can start testing the boomerang in the field.

Now consider how to make a boomerang out of paper

This is a great toy for kids and they can make it themselves. So, let's start in order.

• A sheet of A-4 is needed as tightly as possible. We put it horizontally in front of us, and bend it in half away from ourselves. So that the length of the sheet remains unchanged, and the width is doubled. We cut it in half, and in the future we work with only one half.
• We bend it in half lengthwise, and carefully smooth the bend. Then we unfold the sheet and bend its left half to the central fold, one centimeter, without bringing it to it. Then also with the right side. The halves should be folded in half, and a central bend should be visible between them. To understand exactly how to make a boomerang out of paper, we use the scheme

• In this position, fold the sheet across all the bends exactly in the middle of the sheet. After on this line we turn the corners to the middle, as when we make an airplane. After that, we unfold the corners, and fill them inward along the bend lines.
• Then you need to unfold this origami to the state where the left and right sides were bent to the central bend. Unscrew the right side, in its center lines of folds in the form of a diamond will be visible. By pressing it with your finger, you need to fold it along the bends so that you get a triangle. It should be inside, and the whole structure will be bent in half. Everything is outlined in the diagram.

In ancient times, boomerangs were made mainly for the reason that it flew further than any other object that a person threw, and only closer to our times they began to make them so that they also returned to the hands of the thrower. And they were able to explain that return effect only when they mastered aerodynamics and the first planes flew.