How to make a laser that burns. How to make a combat laser at home. Instructions for making a homemade laser How to make a pointer out of wood with your own hands

It is the most progressive, but also expensive technology. But with its help you can achieve results that are beyond the power of other metal processing methods. The ability of laser beams to impart to any material the required form truly limitless.

The unique capabilities of the laser are based on the following characteristics:

Clear directionality – thanks to perfect directionality laser beam energy is focused at the point of impact with a minimum of losses,
Monochromaticity - a laser beam has a fixed wavelength and a constant frequency. This allows you to focus it with ordinary lenses,
Coherence – laser beams have a high level of coherence, so their resonant vibrations increase the energy by several orders of magnitude,
Power - the above properties of laser beams ensure that the energy of the highest density is focused on a minimal area of material. This allows you to destroy or burn through any material in a microscopically small area.

Design and principles of operation

Any laser device consists of the following components:

energy source;
working body that produces energy;
an optical amplifier, a fiber-optic laser, a system of mirrors that amplify the radiation of the working element.

The laser beam produces point-by-point heating and melting of the material, and after prolonged exposure - its evaporation. As a result, the seam comes out with an uneven edge, evaporating material is deposited on the optics, which reduces its service life.

To obtain smooth thin seams and remove vapors, the technique of blowing melt products from the laser impact zone with inert gases or compressed air is used.

Factory laser models equipped with high-grade materials can provide good indentation rates. But for household use they are too expensive.

Models made at home are capable of cutting into metal to a depth of 1-3 cm. This is enough to make, for example, parts for decorating gates or fences.

Depending on the technology used, there are 3 types of cutters:

Solid state. Compact and easy to use. The active element is a semiconductor crystal. Low-power models have quite affordable prices.
Fiber. Glass fiber is used as the radiation and pumping element. The advantages of fiber laser cutters are high efficiency (up to 40%), long term operation and compactness. Since little heat is generated during operation, there is no need to install a cooling system. Can be manufactured modular designs, allowing you to combine the power of several heads. The radiation is transmitted via flexible optical fiber. The performance of such models is higher than solid-state ones, but their cost is higher.
. These are inexpensive but powerful emitters based on the use chemical properties gas (nitrogen, carbon dioxide, helium). With their help you can weld and cut glass, rubber, polymers and metals with very high level thermal conductivity.

Homemade household laser

For execution repair work and manufacturing metal products often needed in everyday life laser cutting metal with your own hands. Therefore, home craftsmen have mastered manufacturing and successfully use hand-held laser devices.

In terms of manufacturing cost, a solid-state laser is more suitable for household needs.

Power homemade device, of course, cannot even be compared with production devices, but for use for domestic purposes it is quite suitable.

How to assemble a laser using inexpensive parts and unnecessary items.

To make a simple device you will need:

laser pointer;
battery-powered flashlight;
CD/DVD-RW writer (an old and faulty one will do);
soldering iron, screwdrivers.

How to make a handheld laser engraver

Laser cutter manufacturing process

You need to remove the red diode from the computer disk drive, which burns the disk when recording. Please note that the drive must be exactly writing.

After dismantling the upper fasteners, remove the carriage with the laser. To do this, carefully remove the connectors and screws.

To remove the diode, it is necessary to unsolder the fasteners of the diode and remove it. This must be done very carefully. The diode is very sensitive and can be easily damaged by dropping it or shaking it violently.

The diode contained in it is removed from the laser pointer, and the red diode from the disk drive is inserted in its place. The pointer body is disassembled into two halves. The old diode is shaken out by picking it up with the tip of a knife. Instead, a red diode is placed and secured with glue.
It is easier and more convenient to use a flashlight as a body for a laser cutter. The upper fragment of the pointer with a new diode is inserted into it. The glass of the flashlight, which is an obstacle to the directed laser beam, and parts of the pointer must be removed.

At the stage of connecting the diode to the power supply from batteries It is important to strictly observe the polarity.

On last stage check how securely all the laser elements are fixed, the wires are connected correctly, the polarity is observed and the laser is level.

The laser cutter is ready. Because of low power It cannot be used when working with metal. But if you need a device that cuts paper, plastic, polyethylene and other similar materials, then this cutter is quite suitable.

How to increase laser power for metal cutting

You can make a more powerful laser for cutting metal with your own hands by equipping it with a driver assembled from several parts. The board provides the cutter with the required power.

The following parts and devices will be needed:

CD/DVD-RW writer (an old or faulty one will do), with a writing speed of more than 16x;
3.6 volt batteries – 3 pcs.;
100 pF and 100 mF capacitors;
resistance 2-5 Ohm;
collimator (instead of a laser pointer);
steel LED lamp;
soldering iron and wires.

You cannot connect a current source to the diode directly, otherwise it will burn out. The diode draws power from current, not voltage.

The beams are focused into a thin beam using a collimator. It is used instead of a laser pointer.

Sold in an electrical store. This part has a socket where a laser diode is mounted.

The assembly of the laser cutter is the same as the model described above.

To remove static from the diode, they are wound around it. Antistatic wrist straps can be used for the same purpose.

To check the operation of the driver, use a multimeter to measure the current supplied to the diode. To do this, a non-working (or second) diode is connected to the device. For most work homemade devices A current of 300-350 mA is sufficient.

If you need a more powerful laser, the indicator can be increased, but not more than 500 mA.

As a homemade case, it is better to use an LED flashlight. It is compact and convenient to use. In order not to get dirty lenses, the device is stored in a special case.

Important! A laser cutter is a kind of weapon, so it should not be pointed at people, animals, or given to children. Carrying it in your pocket is not recommended.

It should be noted that do-it-yourself laser cutting of thick workpieces is impossible, but it can cope with everyday tasks.

A laser level or level is used in the field of construction and facing work for the purpose of precise marking on any type of surface. The procedure is easy and quick, which significantly saves time in the work process. The tool may not even be used experienced master: Simply fix the device on a support (floor, ceiling, wall) opposite the marking surface and turn it on. On the surface where the marking occurs, a projection of the laser beam will appear horizontally and/or vertically.

The cost of the presented device in various retail outlets is quite high. But, if you apply certain instructions, show accuracy and some patience, it is quite possible to make laser level with your own hands. This approach has a positive effect on saving financial resources that go towards the construction and renovation of various premises.

Device design features

The device is compact and ergonomic. It is easy to fit in your pocket, mounting suitcase or bag. The case is completed with fastening elements. They may be:

magnet;
fastening straps;
tripod.

The beam projected onto the marking surface is constructed along a plane or in a direction. Construction levels, used to indicate a certain direction, produce a projection in the form of a point. Devices for marking a plane are equipped with a special type of optical instrument that turns the beam into a straight line. Levels are divided into types:

Rotary devices, due to rotation around their axis, are capable of producing a clear line (used when pouring floors and constructing ceilings);
positional levels consist of 2 laser radiation sources to create a visible plane (used during finishing works indoors);
self-leveling (can emit up to 5 beams and are equipped with a sight in the form of a simple cross and pendulums located inside the device).

The price of the presented equipment is several times higher than the cost of a conventional level based on liquid and air bubble.

Making a simple level from a laser type pointer

Of the entire list of elements of such a level, you only need to buy a pointer. It is quite possible to make the remaining auxiliary parts yourself. The task of the presented process is to build a reliable fastener that will allow the device to rotate around an imaginary axis completely unhindered. The tool consists of the following parts:

laser pointer;
wooden beam (length - 0.5 meters, width and thickness - 25 × 25 mm, respectively);
cord intended for construction work;
drill for drilling holes;
support (a regular stick will do).

To assemble the equipment, it is enough to make simple steps described below.

The bar is drilled on both sides. As a result, neat holes are formed, which must be parallel to each other. One of the holes made will be used to securely fasten the pointer, and the other will fit the construction cord.
The pointer is securely fixed in the hole and a rope is secured, making it possible to install the device above the floor surface. The hole drilled specifically for the cord must be of the optimal diameter so that the cord can pass through it freely.
A rope is threaded into the hole that was prepared in advance and secured as securely as possible.

The support must be fixed. Otherwise, it will not be possible to carry out the correct level adjustment. The pointer must be high power so that the beam can be clearly displayed on any surface. If the presented parameter is insufficient, the equipment will only be comfortable to use in a darkened room.

How to check the performance of a homemade level

Using a simple rope, the device is suspended from a support in the center of the room. The equipment is turned on, directed in the desired direction, and the required distance along the length of the beam projection is noted. After this, a special stick is installed to ensure ease of marking.

After such important events, you can begin to use the device and point it in any direction. If you leave the position of the stick unchanged, the same height of marks will be ensured. After marking the laser dots, they are connected with construction cord. Next, using a measuring meter, preferably a hard one, draw a marking line.

Level made from a container of water and polystyrene foam

You will need the following items:

convenient container;
plaster or plasticine;
laser pointer;
Styrofoam.

Before you start how to do laser level with your own hands from the presented parts, you need to ensure that your hands are clean and dry. If you ignore these rules, the materials will lose required properties. Next, actions are performed that do not require particularly large material and time costs. All of them are described below.

A clean container (a large saucepan, bucket or bowl made of any material) filled to the brim with water.
A laser-type pointer is attached to a prepared piece of foam. As a nozzle, you need to use a regular point. The fastening can be a dense elastic band, plasticine or a collar. The device should be mounted as evenly as possible, parallel to the mounting surface.
Select the height required for marking and place a container of water there.
The pointer, fixed to the foam, is placed in the reservoir.
Turning on the pointer.
By changing the position of the device on the surface where the marking is made relative to the axis of the central view, points are designated. They will be at the same level relative to the established horizon.

Elements must be of high quality and strength. This will ensure the longevity of the equipment. The presented design is far from ideal, but it gives fairly clear marking results. Thanks to this, such equipment is quite popular among budget or private builders.

Making a laser cross with your own hands

This tool is useful for various works facing type and installation of hinged furniture. For this reason, it is not only popular among professionals, but is also often an integral element in the toolkit of the owner of a city apartment or private house. The following parts are required for the manufacture of the device:

laser type pointer;
tripod from a camera or video camera;
outdated player;
some unnecessary disks.

You will be required to follow the steps below.

A rectangular cross is made from pointers, which is attached to the drive from the player. This ensures free rotation of the tool around its axis.
Ensuring the free lifting of the device to the required height.
The discs are carefully glued together and installed on the drive from the player.
A cross of pointers is attached to the disks. You can use tape or other sticky material.

Advantages of a homemade tool

Despite the fact that such a tool cannot provide high accuracy, it is quite profitable to use it in everyday life. In any case, the marking will be more accurate, and the process itself is much simpler than when using a water level. It is for this reason that such equipment is in demand among household consumers. The positive characteristics of the tool include:

long beam length;
minimum error;
high marking speed.

The use of the equipment is fully justified for walls, floors, ceilings and other supports of a similar type with any type of surface. An alternative scope includes markup of such objects:

personal plots;
fence structure;
facade finishing.

Ingenuity, accuracy and strict adherence to the instructions described above will help to significantly save money and time. Before spending money on expensive equipment, a thrifty person should think about whether it’s worth making the device yourself, saving money? Moreover, its quality and ease of use in everyday life corresponds to an expensive device.

Video on the topic

Before you make a pointer, you will need to decide on its type. After all, it can be laser or conventional. All of them have their own advantages, so which one to choose is up to you.

Making a laser pointer with your own hands

Before you make an azure pointer, you will need to prepare materials in advance. Then the work will proceed quickly and without long breaks. It's important to note that if you want to make a truly powerful laser pointer, you'll need to find a non-working DVD that burns. Other elements will also be needed.

Required additional materials:

chinese lantern
soldering iron
battery
button (from any radio device)
thin wire
capacitor for 100 microfarads and 10 picofarads
voltage stabilizer model KR1158EN3V
chip

Remove the optical element from the DVD drive. Having done this, you will see two laser diodes in it; you will need to remove not the infrared one, but the DVD. After this, be sure to wrap its legs with wire, thus avoiding damage to it by static electricity.

Find 3 pins with reverse side DVD diode. The first is an output of +2.6 - 2.8 V. The next one is negative, but of the same voltage, while the third does not carry any charge.

Start assembling the diagram. Solder a non-polar capacitor to the laser diode. After this, you can remove the wire from its legs. Then solder a polar capacitor and a voltage stabilizer, where the first contact is the output, the second is common, and the third is the input. It is important to remember the positive polarity of the voltage in order not to damage the circuit.

Assemble the stabilizer and two capacitors together, then attach the button, battery and optical part from the flashlight. After this, your product will be ready for use.

Now you know how to make a powerful laser pointer, as you can see, it’s not at all difficult. The main thing is not to deviate from the recommendations, and if you want to make it from wood, then the tips below will be useful to you.

We make a wooden pointer with our own hands

It is very easy to make a pointer out of wood. This takes no more than 30 minutes if you prepare everything you need in advance.

You will need:

plane
skin (small and large)
simple pencil
wooden lath made of durable wood 70 cm long and with a section of 2.5x2.5 cm

Take the rail and draw an octagon on both ends with a pencil, so that it cuts off all four corners on each side. Inscribe a circle in the resulting octagon; it should touch literally all its sides.

Using a planer, remove from the rail along the entire length of the edge. After this, cut off each corner of the formed octagon along the length of the pointer.

Walk in turn with a planer through all the corners of the hexagon. It is necessary to carry out such actions until the rail alternately has a cylindrical shape.

At one end of the product, draw a horizontal and vertical axis, as a result you will have a central point. Step back approximately 5 mm from it and draw a circle, its diameter should be 1 cm. After this, the upper end of the pointer will be ready.

Process the workpiece with a planer so that it has constrictions. To make this easier, mentally divide it into three equal parts vertically. In the second and third sections, the pointer should gradually taper towards the upper end.

Take a large piece of sandpaper and go over it all over in order to achieve the maximum smooth surface. Then do the same, but with a fine sandpaper. Once this is done, coat your wooden pointer with varnish, either clear or tinted. Then leave it to dry completely for 12 hours. After that, you can use it for its intended purpose.

In every house there is an old worn-out technique. Someone throws it in a landfill, and some craftsmen try to use it for some homemade inventions. So an old laser pointer can be put to good use - it is possible to make a laser cutter with your own hands.

To make a real laser from a harmless trinket, you need to prepare the following items:

laser pointer;
flashlight with rechargeable batteries;
old, maybe not working CD/DVD-RW writer. The main thing is that it has a drive with a working laser;
a set of screwdrivers and a soldering iron. It is better to use a branded cutter, but if you don’t have one, a regular one may do.

Making a laser cutter

First you need to remove the laser cutter from the drive. This work is not difficult, but you will have to be patient and pay maximum attention. Since it contains a large number of wires, their structure is the same. When choosing a drive, it is important to consider the presence of a writing option, since it is in this model that you can make notes with a laser. Recording is done by evaporating a thin layer of metal from the disc itself. In the case when the laser is working for reading, it is used half-heartedly, illuminating the disk.

When dismantling the upper fasteners, you can find a carriage with a laser located in it, which can move in two directions. It should be carefully removed by unscrewing; there are a large number of detachable devices and screws that are important to carefully remove. For further work, a red diode is required, with the help of which burning is carried out. To remove it, you will need a soldering iron, and you also need to carefully remove the fasteners. It is important to note that the irreplaceable part for making a laser cutter should not be shaken or dropped, therefore, it is recommended to be careful when removing the laser diode.

How will it be extracted main element future laser model, you need to carefully weigh everything and figure out where to place it and how to connect the power supply to it, since the diode of a writing laser requires much more current than the diode from a laser pointer, and in this case several methods can be used.

Next, the diode in the pointer is replaced. For creating powerful laser The original diode must be removed from the pointer assembly, and a similar one from the CD/DVD-RW drive must be installed in its place. The pointer is disassembled in accordance with the sequence. It must be untwisted and divided into two parts, with the part that needs to be replaced on top. The old diode is removed and the required diode is installed in its place, which can be secured with glue. There are times when difficulties may arise when removing the old diode; in this situation, you can use a knife and shake the pointer a little.

The next step is to make a new case. To make the future laser convenient to use, connect power to it and use a flashlight body to give it an impressive look. The converted upper part of the laser pointer is installed into the flashlight and power is supplied to it from rechargeable batteries, which is connected to the diode. It is important not to confuse the polarity of the power supply. Before assembling the flashlight, the glass and parts of the pointer must be removed, as it will poorly conduct the direct path of the laser beam.

The last step is preparation for use. Before connecting, you need to check that the laser is securely fastened, that the polarity of the wires is connected correctly, and that the laser is installed level.

After completing these simple steps, the laser cutter is ready for use. This laser can be used to burn paper, polyethylene, and to light matches. The scope of application can be vast, everything will depend on your imagination.

Additional points

It is possible to make a more powerful laser. To make it you will need:

DVD-RW drive, can be inoperative;
capacitors 100 pF and 100 mF;
resistor 2-5 ohm;
three rechargeable batteries;
wires with a soldering iron;
collimator;
steel LED flashlight.

This is a simple kit that is used to assemble a driver that, using a board, will drive the laser cutter to the required power. The current source cannot be connected directly to the diode, as it will instantly deteriorate. It is also important to take into account that a laser diode must be powered by current, but not voltage.

A collimator is a body equipped with a lens, thanks to which all rays converge into one narrow beam. Such devices can be purchased at radio parts stores. They are convenient because they already have space for installing a laser diode, and as for the cost, it is quite small, only 200-500 rubles.

You can, of course, use the body of a pointer, but it will be difficult to attach a laser to it. Such models are made from plastic material, and this will cause the case to heat up and it will not be cooled enough.

The manufacturing principle is similar to the previous one, since in this case a laser diode from a DVD-RW drive is also used.

During production it is necessary to use antistatic bracelets.

This is necessary to remove static from the laser diode; it is very sensitive. If there are no bracelets, you can make do with improvised means - you can wind a thin wire around the diode. Next comes the driver.

Before assembling the entire device, the operation of the driver is checked. In this case, it is necessary to connect a non-working or second diode and measure the strength of the supplied current with a multimeter. Considering the speed of the current, it is important to select its strength according to the standards. For many models, a current of 300-350 mA is applicable, and for faster ones, 500 mA can be used, but for this a completely different driver must be used.

Of course, such a laser can be assembled by any non-professional technician, but still for beauty and convenience similar device It makes the most sense to build it in a more aesthetically pleasing case, and which one to use can be chosen to suit every taste. It would be most practical to assemble it in the housing of an LED flashlight, since its dimensions are compact, only 10x4 cm. However, you still do not need to carry such a device in your pocket, since the relevant authorities may file a claim. It is best to store such a device in a special case to avoid dust on the lens.

To make a real laser from a harmless trinket, you need to prepare the following items:

laser pointer;
flashlight with rechargeable batteries;
old, maybe not working CD/DVD-RW writer. The main thing is that it has a drive with a working laser;
a set of screwdrivers and a soldering iron. It is better to use a branded cutter, but if you don’t have one, a regular one may do.

Making a laser cutter

First you need to remove the laser cutter from the drive. This work is not difficult, but you will have to be patient and pay maximum attention. Since it contains a large number of wires, they have the same structure. When choosing a drive, it is important to consider the presence of a writing option, since it is in this model that you can make notes with a laser. Recording is done by evaporating a thin layer of metal from the disc itself. In the case when the laser is working for reading, it is used half-heartedly, illuminating the disk.

Once the main element of the future laser model is removed, you need to carefully weigh everything and figure out where to place it and how to connect the power supply to it, since the diode of a writing laser requires much more current than the diode from a laser pointer, and in this case you can use several ways.

Next, the diode in the pointer is replaced. To create a powerful laser, the original diode must be removed from the pointer, and a similar one from the CD/DVD-RW drive must be installed in its place. The pointer is disassembled in accordance with the sequence. It must be untwisted and divided into two parts, with the part that needs to be replaced on top. The old diode is removed and the required diode is installed in its place, which can be secured with glue. There are times when difficulties may arise when removing the old diode; in this situation, you can use a knife and shake the pointer a little.

Additional points

It is possible to make a more powerful laser. To make it you will need:

DVD-RW drive, can be inoperative;
capacitors 100 pF and 100 mF;
resistor 2-5 ohm;
three rechargeable batteries;
wires with a soldering iron;
collimator;
steel LED flashlight.

You can, of course, use the body of a pointer, but it will be difficult to attach a laser to it. Such models are made of plastic material, and this will cause the case to heat up and it will not be cooled enough.

The manufacturing principle is similar to the previous one, since in this case a laser diode from a DVD-RW drive is also used.

During production it is necessary to use antistatic bracelets.

Of course, such a laser can be assembled by any non-professional technician, but still, for beauty and convenience, it is most reasonable to build such a device in a more aesthetic case, and which one to use can be chosen to suit every taste. It would be most practical to assemble it in the housing of an LED flashlight, since its dimensions are compact, only 10x4 cm. However, you still do not need to carry such a device in your pocket, since the relevant authorities may file a claim. It is best to store such a device in a special case to avoid dust on the lens.

It is important not to forget that the device is a weapon of its kind, which should be used with caution and should not be pointed at animals or people, as it is very dangerous and can cause harm to health, the most dangerous is when pointed at the eyes. It is dangerous to give such devices to children.

The laser can be equipped with various devices, and then a fairly powerful sight for weapons, both pneumatic and firearms, will come out of a harmless toy.

Here are some simple tips for making a laser cutter. By slightly improving this design, you can make cutters for cutting acrylic material, plywood and plastic, and carry out engraving.

Man has learned many technical inventions by observing natural phenomena, analyzing them and applying the acquired knowledge in the surrounding reality. This is how man gained the ability to kindle fire, created a wheel, learned to generate electricity, and gained control over the nuclear reaction.

Unlike all these inventions, the laser has no analogues in nature. Its emergence was associated solely with theoretical assumptions within the framework of emerging quantum physics. The existence of the principle that formed the basis of the laser was predicted at the beginning of the 20th century by the greatest scientist Albert Einstein.

The word "laser" appeared as a result of the reduction of five words describing the essence of a physical process to the first letters. In the Russian version, this process is called "amplification of light with the help of stimulated emission."

By its operating principle, a laser is a quantum photon generator. The essence of the phenomenon underlying it is that under the influence of energy in the form of a photon, an atom emits another photon, which is identical to the first one in the direction of motion, its phase and polarization. As a result, the emitted light is enhanced.

This phenomenon is impossible under conditions of thermodynamic equilibrium. To create induced radiation, various methods are used: electrical, chemical, gas and others. Lasers used in domestic conditions (laser disk drives, laser printers) use semiconductor method stimulation of radiation under the influence of electric current.

The principle of operation is that air flows through the heater into the hot air gun tube and, having reached the set temperatures, enters the part being soldered through special nozzles.

If malfunctions occur, the welding inverter can be repaired with your own hands. Repair tips can be read.

In addition, a necessary component of any full-fledged laser is optical resonator, the function of which is to amplify a beam of light by reflecting it multiple times. For this purpose, mirrors are used in laser systems.

It should be said that creating a real powerful laser with your own hands at home is unrealistic. To do this, you need to have special knowledge, carry out complex calculations, and have a good material and technical base.

For example, laser machines that can cut metal get extremely hot and require extreme cooling measures, including the use of liquid nitrogen. In addition, devices operating on the basis of the quantum principle are extremely capricious, require the finest tuning and do not tolerate even the slightest deviations from the required parameters.

Required Components for Assembly

To assemble a laser circuit with your own hands, you will need:

DVD-ROM with rewritable (RW) function. It contains a red laser diode with a power of 300 mW. You can use laser diodes from BLU-RAY-ROM-RW - they emit violet light with a power of 150 mW. For our purposes, the best ROMs are those that have higher speed records: they are more powerful.
Pulse NCP1529. The converter produces a current of 1A, stabilizes the voltage in the range of 0.9-3.9 V. These indicators are ideal for our laser diode, which requires DC voltage at 3 V.
Collimator for obtaining an even beam of light. There are now numerous laser modules on sale from, including collimators.
Output lens from ROM.
A housing, for example, from a laser pointer or flashlight.
Wires.
Batteries 3.6 V.

To connect the parts, it will be necessary to determine which cable is phase and where the neutral and ground are. A tool like this will help with this.

This way you can assemble the simplest laser. What can such a homemade “light amplifier” do:

Light a match from a distance.
Melt plastic bags and tissue paper.
Emit a beam over a distance of more than 100 meters.

This laser is dangerous: it will not burn through skin or clothing, but it can damage the eyes.

Therefore, you need to use such a device carefully: do not shine it into reflective surfaces (mirrors, glass, reflectors) and in general be extremely careful - the beam can cause harm if it hits the eye even from a distance of one hundred meters.

DIY laser on video

Have you decided to make something incredible using simple details? Laser is not considered a new product these days, but making it at home is not difficult. We will tell you how to make a laser yourself using a disk drive and a regular flashlight.

Attention! The laser power reaches up to 250 MilliWatts. Before starting the experiment, take care of your safety and wear safety glasses (welder safety glasses). Never point the laser beam at people or animals, especially their eyes. Lasers can injure people.

In order to make a laser ourselves, we will need:

1. Device for recording DVD discs.
2. AixiZ laser pointer (you can take another one).
3. Screwdriver.
4. Flashlight.

How to find out the power of a laser diode?

The laser power can be determined by the recording speed characteristics of dual-layer discs:

1. Speed 10X, laser power 170-200 MilliWatts.
2. Speed 16X, laser power 250-270 MilliWatts.

Instructions. How to make a laser?

Step #1. Unscrew and open the lid. We release and remove the carriage (the structure of the drive may differ, but each drive has two guides along which the carriage moves) and disconnect all the cables.

Step #2. Having freed the carriage, we begin to unscrew the screws and parts to free the diode itself. The drive can have two diode lasers:

1. For disc reading (infrared diode).
2. For recording a disc (red diode).

The board is attached to the desired diode (red), use a regular soldering iron to release the diode.

Step #3. After a short process, we should get a diode in this form.

Many radio amateurs have wanted to make a laser with their own hands at least once in their lives. It was once believed that it could only be collected in scientific laboratories. Yes, that's true, if we talk about huge ones laser installations. However, you can assemble a simpler laser, which will also be quite powerful. The idea seems very complicated, but in reality it is not difficult at all. In our article with video we will talk about how you can assemble your own laser at home.

DIY powerful laser

DIY laser circuit

It is very important to follow basic safety rules. Firstly, when checking the operation of the device or when it is already fully assembled, under no circumstances should you point it at the eyes, other people or animals. Your laser will be so powerful that it can light a match or even a sheet of paper. Secondly, follow our scheme and then your device will work for a long time and with high quality. Thirdly, do not let children play with it. Finally, store the assembled device in a safe place.

To assemble a laser at home, you will not need too much time and components. So, first you need a DVD-RW drive. It can be either working or non-working. This is not important. But it is very important that it is a recording device, and not a regular drive for playing discs. The drive's write speed should be 16x. It can be higher. Next, you will need to find a module with a lens, thanks to which the laser can focus at one point. An old Chinese pointer may well be suitable for this. It is best to use an unnecessary one as the body of a future laser. steel lantern. The “filling” for it will be wires, batteries, resistors and capacitors. Also, do not forget to prepare a soldering iron - without it, assembly will be impossible. Now let's see how to assemble a laser from the components described above.

DIY laser circuit

The first thing you need to do is disassemble the DVD drive. You need to remove the optical part from the drive by disconnecting the cable. Then you will see a laser diode - it should be carefully removed from the housing. Remember that the laser diode is extremely sensitive to temperature changes, especially cold. Until you install a diode in the future laser, it is best to rewind the diode leads with thin wire.

Most often, laser diodes have three terminals. The one in the middle gives a minus. And one of the extreme ones is a plus. You should take two AA batteries and connect them to the diode removed from the case using a 5 Ohm resistor. In order for the laser to light up, you need to connect the negative battery to the middle terminal of the diode, and the positive one to one of the outer terminals. Now you can assemble the laser emitter circuit. By the way, the laser can be powered not only from batteries, but also from a battery. This is everyone's business.

To ensure that your device is assembled to a point when turned on, you can use an old Chinese pointer, replacing the laser from the pointer with one you assembled. The entire structure can be neatly packed into a case. This way it will look more beautiful and last longer. The body can be an unnecessary steel lantern. But it can also be almost any container. We choose a flashlight not only because it is stronger, but also because it will make your laser look much more presentable.

Thus, you have seen for yourself that assembling a sufficiently powerful laser at home does not require either deep knowledge of science or prohibitively expensive equipment. Now you can assemble the laser yourself and use it for its intended purpose.

Many people know about the possibilities of laser technologies and their benefits. They are used not only in industry, but also in cosmetology, medicine, everyday life, art and other areas of human life. However, not everyone knows how to make a laser at home. But it can be built from scrap materials. To do this, you will need a non-working DVD drive, a lighter or a flashlight.

Before starting at home, you need to collect all the necessary elements. First of all, you need to disassemble the DVD drive. To do this, unscrew all the screws that hold the top and bottom covers of the device. Next, the main cable is disconnected and the board is unscrewed. The protection of diodes and optics must be broken. The next step is to remove the diode, which is usually done with pliers. To prevent static electricity from damaging the diode, its legs must be tied with wire. You must remove the diode carefully so as not to break the legs.

Next, before making a laser at home, you need to make a driver for the laser, which is represented by a small circuit that regulates the power supply to the diode. The fact is that if the power is set incorrectly, the diode can quickly fail. You can use AA batteries or a mobile phone battery as a power source.

Before you make a laser at home, you need to take into account the fact that the burning effect is provided by optics. If it is not there, then the laser will simply shine. As optics, you can use a special lens from the same drive from which the diode was taken. To set the focus correctly, you need to use a laser pointer.

In order to build a regular pocket laser, you can use a regular lighter. However, before you make a laser from a lighter, you need to know the construction technology. It is best to purchase a high-quality incendiary element. It needs to be disassembled, but the parts should not be thrown away, as they will still be useful in the design. If there is gas left in the lighter, it must be released. Then the insides must be turned out using a drill with special attachments. Inside the lighter body there is a diode from the drive, several resistors, a switch and a battery. All elements of the lighter need to be installed in their places, after which the button that previously lit the flame will turn on the laser.

However, to construct the device, you can use not only a lighter, but also a flashlight. Before you make a laser from a flashlight, you need to take the laser block from the CD drive. In principle, the structure of a homemade laser in a flashlight is no different from the structure of a laser in a lighter. It is only necessary to take into account the power supply, which almost never exceeds 3 V, and it is also desirable to build an additional voltage regulator. It will increase the life. It is very important to take into account the polarity of the diode and stabilizer.

All assembled filling must be placed in the body of the disassembled flashlight. First, not only the inner part, but also the glass is removed from the flashlight. After installing the laser unit, the glass is installed in place.