Do-it-yourself shot blasting chamber drawings. Sanding the car in a special chamber

A sandblaster is a special device that throws out sand at a significant speed. The main task is to clean or polish the surface being treated.

Modern specialized stores offer a variety of sandblasting units, differing in their power level and cost. However, functional and reliable products are offered at a fairly high price. At the same time, models in the mid-price range can quickly become unusable. As a result, many people are interested in how to make a sandblasting machine with their own hands. The task can be completed in the shortest possible time and without any difficulties.

Drawings and diagrams

Before you start making a sandblasting machine, it is extremely important to understand the specifics of its operation.

General principle operation is easy. Simple models in their design they resemble the design of a spray gun. Any drawing can confirm this. It is assumed that the equipment will receive compressed air flow into its air ducts, after which it will lift the sand and throw it out through the nozzle. Such an easy operating principle contributes to the convenient and quick use of the device. In addition, its production is amazingly simple.

However, in order to successfully create a homemade sandblasting unit, a special compressor is required. It must guarantee air flow at optimal pressure. In fact, it is difficult to create a compressor yourself, so it is best to buy it in a specialized store. It is advisable to choose models with a power of at least 3 kW and the presence of a forced cooling system. It will not be possible to successfully create a sandblasting unit without a compressor, since it simply will not be able to cope with the assigned tasks.

When wondering how to make a sandblasting machine with your own hands, it is extremely important to understand the specific operation of the equipment used. Otherwise, the created unit will not be able to exhibit the optimal level of functionality and successfully provide high-pressure air flow. Experts note that it is best to use compressors with a capacity of at least 500 liters per minute. To eliminate unnecessary risks associated with the functionality of the equipment, the compressor motor must have a forced cooling system to eliminate the risk of overheating.

To create a sandblast you will need to use:

1. A compressor that will provide a stable air supply at optimal pressure.
2. A special container for material (sand), which must continuously supply abrasive material. Recommended to use gas cylinder from propane or freon. Both containers boast optimal resistance to mechanical factors and are ready to contain significant pressure.
3. A sandblaster nozzle is also required for the unit to operate successfully. The best materials are boron and tungsten carbide. Short-lived products are made from ceramics and cast iron, but they cannot cope with long-term intensive work.
4. To create a complete structure, you also need to use a 2-inch piece of steel water pipe with special thread and plug, Ball Valves type S 111, threaded pipe DN 15 with three adapters, 2-meter reinforced rubber hose, gas hose, collet clamp, hose fittings, tape made of fluoroplastic sealing material.

If you use high-quality components at affordable prices, the total cost of the kit will be about $35. In fact, this amount turns out to be more profitable compared to the price of ready-made sandblasting equipment.

How to make a nozzle, nozzle, gun

When creating a homemade sandblasting machine with your own hands, it is recommended to pay attention to the manufacturing features of the nozzle, nozzle and gun. Only in this case a high level of equipment reliability and the possibility of its successful operation are guaranteed.

Homemade nozzle

In order to create a special nozzle for a sandblasting machine, it is recommended to ensure the availability of special structural parts:

• a nozzle through which a mixture of water and sand will be supplied to the treatment zone;
• trigger;
• reinforced hose that successfully withstands significant pressure;
• dispenser for guaranteed savings in the abrasive material used.

It is best to install a ceramic nozzle on the nozzle of the sandblasting machine being created, which can last for a long time. At the same time, the metal analogue will not live up to the expectations regarding its service life.

It is important to remember that the efficiency of a sandblasting machine with a homemade nozzle largely depends on the quality of the nozzle used. For this reason, it is best to create a nozzle yourself only if it is possible to drill an exact hole in a metal rod with a diameter of about 15 millimeters. If this is not possible, it is best to use a factory nozzle, as it will contribute to the successful operation of the entire device. When choosing serial products, you can note the presence of special triggers, which allow you to count on the successful operation of the sandblasting machine.

When choosing a hose, it is recommended to take into account that its minimum length should be 2 meters for maximum convenient work. At the same time, it is best to choose reinforced products, as they will be able to work under high pressure and be resistant to abrasive material. An unreinforced device can quickly become unusable.

Features of creating a nozzle:

• It is recommended to use a ceramic or metal tip;
• It is best to attach a functional dispenser to the installed tip;
• use a clamp to secure the hose optimal diameter and fitting.

The most important thing to remember is that the nozzle will experience significant pressure generated by the sandblaster's compressor. To eliminate unnecessary risks, care should be taken to ensure the tightness and reliability of the structure, therefore fum tape is required for additional fastening.

Nozzle

The main characteristics of the nozzle of any sandblasting machine:

• hole type;
• diameter;
• length;
• manufacturing material.

Important! The diameter of the hole in the nozzle, which is fixed on the unit using a special holder, directly depends on the performance of the device. In this case, productivity is determined by the power of the jet or the volume of air flow that can be passed through in a certain period of time. At the same time, the power of the jet becomes directly proportional to the volume of air flow that passes through the unit. For this reason, to increase the power of the device, it is recommended to create a nozzle with a larger diameter. When creating a sandblaster for high-pressure washing with your own hands, you should take care of the correct creation of the nozzle.

So, the ratios:

• 6 millimeters (1/4 inch) - 100% power;
• 8 millimeters (5/16 inches) - 157%;
• 9.5 millimeters (3/8 inch) - 220%;
• 11 millimeters (7/16 inches) - 320%;
• 12.5 millimeters (1/2 inch) - 400%.

In this case, a nozzle with a diameter of 6 millimeters contributes to the formation of a jet with a power of 30 cubic meters at one o'clock.

For sandblasting any surfaces with minor contamination, it is best to choose nozzles 7-8 centimeters long. At the same time, to effectively clean surfaces with complex stains, models with a length of up to 23 centimeters are required.

At home, you can only successfully make a nozzle for a sandblasting machine with your own hands, which will have regular holes, but even this task will most likely seem complex and specific. At the same time, independent creation of sandblasting machines with internal holes cannot be successful, since their production requires special equipment.

To create nozzles it is customary to use various materials that affect durability finished product. So, the approximate service life of the created unit during intensive work:

• ceramics - 1-2 hours;
• cast iron - 6-8 hours;
• tungsten carbide - 300 hours;
• boron carbide - 750-1000 hours.

If steel shot is used instead of sand as an abrasive material in a sandblasting machine, the durability of the nozzles increases by 2-2.5 times. In any case, it is recommended to choose only suitable materials to increase the service life of the sandblasting unit. When making a sandblasting nozzle yourself, you need to value your work and correctly evaluate its feasibility instead of thinking only about saving. This approach provides the opportunity to evaluate the maximum benefit of independently carrying out activities to create a sandblasting machine.

Gun

If you need to create a sandblasting gun with your own hands, it is extremely important to understand the specific design of this unit.

The simplest gun includes a handle, two fittings and a special tip. In this case, one fitting is required for air flow at optimal pressure, and the other for sand suction.

Initially, you will need to take care of the presence of a nozzle or nozzle. You should be prepared for the fact that air and sand may be ejected through the nozzle at optimal pressure. In order for the sandblasting unit to operate successfully, independent production of a nozzle or nozzle is allowed only with a guaranteed understanding of the features of the device and its capabilities. efficient work.

Considering the size of the nozzle, you should grind the body to the gun. Then a handle and two fittings are attached to the body. The easiest way involves assembling the unit using water fittings, a tee and plastic container for sand. Such a sandblasting machine can be manufactured in the shortest possible time. To do this, you just need to pour sand into the container you are using, and then attach it to the second end of the fitting. In this case, the design must include a hose with a compressed air flow, which will be produced by the compressor.

Knowing how you can successfully install a sandblasting machine with your own hands, you are guaranteed to be able to successful creation a unit that will delight you with a high level of functionality and reliability.

Sandblasting from Karcher

Attention! The main difference between equipment from Karcher is the use of pneumatic washing equipment, which will also find a worthy place in automotive work.

In this case, a conventional compressor is not required. It is assumed that the abrasive material (most often sand) will be fed under the influence of strong kinetic energy, which will contribute to effective cleaning. At the same time, the created sandblasting attachment for a Karcher with your own hands can be implemented on the basis of a gun designed for pneumatic cleaning equipment.

To create a nozzle it is best to use quality materials. In this case, it is allowed to use only very fine sand, which will be supplied along with distilled water. Otherwise, there is a risk that the sandblasting unit will not last a long time due to its increased vulnerability to various external factors.

So, how to make a sandblasting machine with your own hands? What additional aspects should be considered?

The most important thing is to understand the specifics of sandblasting:

1. When you press the special gun, the water should flow past the intake hose. The main goal is to create a vacuum.
2. Subsequently, the created vacuum sucks in sand, which mixes with water. The required process starts successfully.

The implementation of such a scheme usually turns out to be impractical. Most often, it is recommended to use add-ons in the form of taps and dispensers. If you can successfully create a homemade sandblast with your own hands, cleaning a surface with a diameter of 70-80 centimeters can take a minimum of time and up to 30 kilograms of sand.

When creating a nozzle for a sandblasting machine, you need to ensure that you have the following parts:

• nozzle ( this device is the basis for any sandblasting equipment, not just Karcher);
• trigger;
• reinforced hose (minimum length - 2 meters);
• convenient and functional dispenser;
• ceramic nozzle for active use of a sandblasting unit (the metal analogue will quickly become unusable).

It should be noted that creating sandblasting from Karcher yourself is not so easy. Specificity will even appear in the manufacture of the nozzle, because for this you will need to select a metal rod with a diameter of 15 millimeters and carefully saw it from the middle.

You can assemble the nozzle according to the following scheme:

• the nozzle is attached to the nozzle using the existing thread;
• on the other side of the nozzle, a reinforced hose is installed, which is secured with a fitting and a clamp;
• A dispenser is installed at the end of the ceramic nozzle.

It is these three main aspects that contribute to the creation of a ceramic nozzle that will allow long-term use of sandblasting equipment.

To save sand, it is allowed to use a special tank with a grid. This requires a reinforced hose, which is attached to a container with water and abrasive material, as well as to a tray for collecting waste sand.

A video of sandblasting from a Karcher with your own hands will allow you to understand the specifics of the equipment and its further successful use.

DIY mini version

The easiest task is to create a mini sandblasting machine with your own hands. In this case, you need to perform certain tasks that will allow you to become the owner functional unit. So, how to assemble a sandblaster with your own hands?

1. Initially, you should prepare the selected container. For example, if a cylinder that previously contained propane is used, the remaining propane is released before the neck is cut off.
2. The prepared container is passed inside. The cylinder is pumped with a compressor.
3. Two holes are made in the prepared container, which are located opposite each other: at the location of the tap and at the bottom.
4. The holes are welded to create a reliable neck.
5. A pipe is welded to the hole from below. When creating a sandblasting machine with your own hands, it is extremely important to ensure the tightness of the structure.
6. The cylinder is placed on a tripod or wheels for transportation and stability.
7. Fum tape is wound onto the threaded ends of the pipes for tightness.
8. Screw on the taps for the equipment.
9. Fittings are installed on the tee. A 14 mm hose is screwed into one, and a copper tube with a hose. A hose is connected to the third fitting and secured with a clamp.
10. On the opposite side, install a container for abrasive material.
11. A special collet clamp with a nozzle is attached to the end of the hose.
12. A tee is installed at the inlet to supply air flow. In addition, connect a tap with a sand cylinder.
13. The first outlet from the tee is connected to the compressor, the second - to the tank.

You can try to create complex or simple sandblasting with your own hands even at home, but you need to take care of high level functionality and reliability of the unit. In addition, sandblasting equipment must function successfully.

A sandblasting chamber or sandblasting machines are used to treat surfaces against corrosion, old paint and other coatings.

Since the work is carried out under strong pressure, the sand particles have strong kinetic energy, through which cleaning is carried out. It is quite possible to make such a camera with your own hands.

In addition to construction sand, the following materials can be used in the work:

• small balls of lead or glass;
• fraction;
• electrocorundum

The use of materials depends on the type of surface being treated and the degree of contamination. At home, as a rule, it is used.

How the camera works

Schematically, the sandblasting chamber looks like this:

Such a chamber is called inhabited because the process is controlled by a specialist who is located outside of it.

Although modern components allow you to assemble as much as possible with your own hands safe camera, you should still use personal protective equipment when working:

• gloves;
• fully covered work clothes;
• respirator.

Please note that you can make such a camera of almost any size - from a small hangar to an entire garage. It all depends on what type of processing this equipment is intended to be used for.

The main advantages of the camera include the following factors:

• the ability to process surfaces of any size and shape;
• The cleaning process can even be controlled visually.

In fact, a correctly assembled model of such a unit makes it universal.

DIY assembly

Before you start assembling the software, you need to select the right drawing, all the necessary components and a location for the equipment. Too large an area is not suitable in this case. Since sand is an abrasive material, it has ricochet properties. In a large space, this phenomenon will have an even larger scale, which can negatively affect the quality of processing. To reduce the ricochet force, you can line the walls with rubber plates.

For use at home, you can make a stationary camera. It does not take up much space; it can simply be placed in the same garage or shed. Such a chamber is a large box that is made of metal or lined with it.

The drawing of such a camera looks like this:

Assembling the camera yourself

The first and most important thing that should be taken into account when assembling this type of equipment is ventilation. Since abrasive material is, first of all, dust and dirt, work should be carried out in indoors with good ventilation and the use of personal protective equipment.

To assemble the camera yourself, you will need the following components:

• container for supplying abrasive material;
• compressor;
• nozzle;
• gun;
• ball valve;
• additional elements for fastening all parts and sealing.

It is best to place such cameras on a special stand or table. To weld a box or trim, it is advisable to take metal no more than 1 millimeter thick.

On one side of such a chamber there must be a viewing window. It is better to choose impact-resistant plastic as an insert. Glass can quickly become unusable. Two symmetrical holes with a diameter of up to 100 mm should be made in the front wall of the chamber. They are needed to secure special gloves.

Please note that gloves will quickly become unusable, so changing them should not cause complications.

The bottom of the chamber should be made of durable reinforced mesh, under which there will be a chute for used abrasive material. Optimal lighting achieved through two lamps required size.

The gun itself fits inside. Air is supplied to it using a hose connected externally. The hose itself must have access to a container with sand. Thus, the material to be processed will not extend beyond the working area.

To make it easy to place products in the chamber non-standard shape or size, it is better to cover the opposite sides of the chamber with a tarpaulin. As with the sandblaster, it is important to select only high-quality parts to assemble the camera. This is especially true for the nozzle and gun. Pay attention to the sand container. If waste material is collected carefully, it can be reused. It is not difficult to assemble such a camera with your own hands. The main thing is to choose correct drawing and use only high-quality materials in your work.

Safety precautions

When using abrasive materials, safety precautions must be observed. You should work in a closed suit, and always with a respirator. Also pay attention to your shoes - they should be completely closed.

A sandblasting machine is useful to almost everyone. This device will help you quickly and efficiently clean surfaces from traces and scale. It is not difficult to find sand cleaning devices on sale, but they are not cheap. The most “budget” of them will cost at least 9,000 rubles. Today the editors of the online magazine website offers you detailed instructions about how to make sandblasting with your own hands. Videos, tips from experts and important recommendations for operating the device - in this article.

Read in the article

How does a sandblasting machine work and its diagram

Make a sandblasting machine entirely from homemade parts If it doesn't work, you will have to purchase some parts of the device before starting work. In principle, sandblasting is similar to a spray gun. It consists of a compressor that provides air flow, a line into which sand flows and a nozzle that ejects the filler towards the surfaces being treated. The device itself can have impressive dimensions if you, for example, need to clean paint marks, or compact if we are talking about delicate glass engraving work.

In addition to the three main elements that have already been mentioned, the design of the device includes a receiver, a faucet system, electrical and hoses. To fill the sand you will need a main tank.

General diagram of the sandblasting machine

This is what the device diagram looks like.

As you can see, all the components of the device can be purchased or manufactured separately, which means that the task at hand - making a sandblasting installation with your own hands - is feasible.

Operating principles of a sandblasting machine and its scope of application

The simple principle of the action of sand as a powerful abrasive is known to everyone. The smallest particles falling on the working surface under pressure tear off all layers of plaque and rust. The task of sandblasting is precisely to direct the abrasive in the desired direction and ensure required pressure to get the job done. The pressure is provided by an air compressor.

• The sleeve is easy to choose. A rubber hose is enough for this. required diameter. The hose is secured with metal clamps or ties.
• Nozzle– you can buy a ready-made nozzle or make it yourself from scrap material. To make the device last longer, it is equipped with replaceable ceramic caps with 5-6 mm holes for accurate operation.

How to make sandblasting with your own hands from scrap materials: master classes and videos

Think before you start sandblasting. How large is the work you are planning? Buying an air compressor is also an expense for the family budget. If your only task is to clean it, maybe it’s easier to rent such a device at one of the rental points?

It’s another matter if the unit is needed regularly. Its purchase will affect your wallet. Factory models often fail, and manufacturers give them a very modest warranty due to specific operating conditions. So it turns out that doing sandblasting yourself is cheaper, and given the use of replaceable parts, it will last you indefinitely. Let's look at the most popular models made from scrap materials.

How to make your own sandblasting from a gas cylinder

Image	Description of work
	You need to make a hole in the bottom of the gas cylinder. Please note: the cylinder must be completely empty, this is very important for your safety! To make a hole of the required diameter, several holes are first drilled, then the contents are sawed out into the metal.
	Uneven edges must be carefully sanded with a sanding attachment.
	A two-inch gong with a threaded cap will need to be welded to the hole.
	The device will require fittings, bends, a hose and ties.
	The hardest part of the job is unscrewing the valve from the cylinder. In old cylinders, the taps are usually difficult to unscrew; you can slightly heat them with a torch, use a lever and a gas wrench, or a vice.
	Screw the fitting into the vacated hole to connect the remaining parts.
	All threaded connections need to be compacted using tow or FUM thread.
	To release sand, you will need to build such a structure from adapters.
	Alternatively, you can use the nozzle from a cheap heat gun for the nozzle. It is secured to the end of the hose using electrical tape and clamps.
	To adjust the pressure power, you will need to install a tap at the connection point of the compressor hose.

A detailed guide on how to make a homemade sandblaster with your own hands in the following video:

How to make your own sandblast from a fire extinguisher

Image	Description of work
	To make a small sandblaster, you can use a regular fire extinguisher. Such a container will have to be refilled often, but it is easy to move it to a new place.
	The valve in fire extinguishers is much easier to unscrew than in a gas cylinder. All you need is a gas wrench.
	As in a gas cylinder, a hole must be made in the bottom of the fire extinguisher to fill with sand.
	A threaded fitting is welded to the resulting hole.
	It is necessary to weld to the cylinder metal legs. They will give the structure stability and allow you to connect a hose from below.
	For further work you will need a set of fittings and a tap.
	When assembled, the device looks like this: at the outlet of the cylinder there is a tap, on the left there is an outlet for connecting a compressor, on the right there is a sandblasting hose.

All that remains is to connect a compressor and a sandblasting gun to this installation. This small device is useful for small jobs.

Sandblasting nozzle and how to make it yourself

What is important for sandblasting nozzle? First of all, the diameter of the outlet hole; the accuracy of processing and the consumption of abrasive depend on it. How abrasive is consumed depending on the nozzle diameter in the table:

Second important point– nozzle length. The length affects the quality of the surface finish. And the last thing is the material. The stronger the nozzle material, the longer this structural element will last.

Finished factory products have standard diameters nozzles – 12, 10, 8 and 6 mm. You can find nozzles with the Venturi system on sale; the speed of abrasive particles in them can reach 720 km/h. Processing with this power is highly efficient.

What can you make a sandblasting nozzle from with your own hands, and how long will it last:

For your information! If you use steel shot as an abrasive, the nozzles will last almost three times longer.

Do-it-yourself technology for making a nozzle from spark plugs for sandblasting:

Image	Description of work
	Ceramic car spark plugs are suitable for making nozzles; almost every motorist has a supply of them (already used). You need to remove the tip from the candle; it can be easily removed without the use of tools.
	The core must be clamped in a vice and the spark plug must be unscrewed with gentle movements to remove this metal core.
	The remaining core can be thrown away; it will no longer be useful.
	Afterwards, the candle should be carefully cut with a grinder immediately behind the first nut. Do this carefully so as not to break the ceramic.
	After trimming, all metal parts can be easily removed from the ceramic tip and the sandblasting nozzle is ready.
	The ceramic nozzle can withstand a maximum of 2 hours of operation and then loses its shape. So if you need to ensure longer runtime, stock up on a set of tips.

How to extend the service life of a homemade nozzle, see the following video:

How to make your own sandblasting gun

A sandblasting gun for a compressor is a tool for fine processing of small products. It's easy to make, you just need plastic bottle and a gun with a nozzle. Details of the process are described in the video with the master class:

Pros and cons of homemade sandblasting

What benefits will you get if you take on making your own sandblasting machine:

• save money, since a homemade unit will cost much less than a purchased one;
• get a device more powerful than the factory one.

But not everything is so rosy; there are also disadvantages to this idea:

Think before you get down to business and correctly calculate your capabilities.

A short instruction on the correct operation of the sandblasting machine

A sandblasting machine is a potentially dangerous unit; when working with it, it is important to follow safety precautions to avoid injury:

How much do factory-made sandblasting machines cost: the most popular models

Sandblasting machines for household use can be purchased in specialized stores. We have analyzed for you the range of similar products and bring to your attention several of the most popular models on Yandex Market:

Does it make sense to do homemade sandblasting?

We gave you everything known facts, materials and calculations, but you will have to answer this question yourself. You can buy a ready-made car for about 8,000 rubles; rental will cost you 500-800 rubles per day. Consider whether you have components for self-made unit. If you don’t have an air compressor lying around in your garage warehouse, buying one will also have a significant impact on your budget.

– special equipment that is used to clean car body parts. Often a sandblasting chamber is also called an abrasive chamber, because the abrasive material is supplied under pressure to the car body.
Sandblasting machine

People call it simply - sandblasting, and this name really fits. The main material used in this type of chamber is sand. But in addition to it, the following materials are also used:

• Iron pellets;
• Glass balls;
• Electrical corundum.

The sandblasting chamber is extremely useful when it is necessary to remove dirt and deposits of resin or tar from the surface of the body before painting and applying paint. For the process to proceed normally, a special device is used, which supplies abrasive material with directed pressure onto the car body through a guide gun. In this case, the area that one pass can be adjusted through the nozzle, or rather, through the diameter of this device. Please note that not only sand is used as an abrasive material, depending on the material, the quality of the steel and other elements, other special materials are also used, which improve the process and do not harm the iron. You must also clearly understand that every action takes place under great pressure and sand flying at such speed poses a great danger, so you need to follow safety precautions during every moment of machine repair.

Such treatment is considered effective when it is necessary to clean the car body from corrosion in every hard-to-reach area of ​​the car body. Therefore, if you decide to repaint your car, then the work should be carried out by skilled people. You won't be able to clean your car adequately on your own.

Features of sandblasting

So, the first thing you need to know about what functions a sandblasting machine has is that it is used both indoors and outdoors.

Accordingly, in the first case, the compressor is located in an open space, and in the second, a chamber is required that closes hermetically and does not release the abrasive outside the room. In this case, the sandblasting chamber greatly limits the size of the part, which can be processed. This unpleasant minus is compensated by the fact that not every car repair shop does car repairs as a whole and such a small camera is convenient for them. In order for the sandblasting chamber to work properly and last a long time, it is advisable to purchase a device High Quality

Sandblasting chamber

Understand that equipment for sandblasting metal is an important unit and only adds additional waste to the cleaning process in machines, and this is extremely undesirable for a normal business. An alternative to purchasing is to make a sandblasting chamber yourself, but this requires skills and knowledge that may not be available. So try not to make a bad choice at the purchasing stage, this is the main problem. Try to decide in advance how and how often the car can be prepared for painting work. It is important to understand that those sandblasting chambers and characteristics that meet the demands and needs in terms of economic feasibility will pay off.

The inhabited sandblasting chamber differs from others in that the cleaning process is fully controlled by the chamber operator. When the power of the device is installed outdoors, so as not to interfere with the work of the master. Inside there is a nozzle and a control panel so that the work of the sandblaster still remains comfortable. Remember that the abrasive sand is fed inside under high pressure, and the chamber is equipped in such a way that the sandblaster not only feels comfortable, but also safe inside this building. Therefore, when working, it is important that each person consciously puts on protective elements clothes before sandblasting of the glass begins. There is even a set of clothes thought out in advance:

1. Tight overalls that protect the body;
2. face with a respirator;
3. Gloves for sandblasting chambers;

Please note that the work taking place in the sandblasting room is considered dangerous, and in order for the master to be allowed to work, he must be given preliminary instructions. He must follow every rule and remember that the pressure created by the compressor is life-threatening and it is impossible to expose limbs or body to the stream - the possibility of injury remains.

Sandblasting chambers for glass are presented on the market in different sizes– from a small garage a little more than a car to a huge workshop, which, in principle, is convenient for use in various designs and goals depending on business needs. On a large scale, the presence of several craftsmen indoors is allowed to speed up and optimize the process. Accordingly, this will increase the coefficient useful action from the camera, which will have a positive impact on profits.

The following are the advantages of a do-it-yourself sandblasting chamber:

• Allow parts of floating size and perimeter to be cleaned;
• Visually and fully monitor the progress of cleaning the body from debris;
• The design of the chamber involves the processing of non-standard structures of complex shape;

Therefore, if you want to make processing better and more profitable, then you need to think about purchasing additional equipment.

A common purchase is a stand for the workpiece, because in order for the work to be carried out efficiently, you need to take care of the convenience for the master. It is also common to make a sand washer with your own hands, which helps to prepare the part in advance. If we add here that there is ventilation for sandblasting chambers inside, then we get a universal device that can satisfy the needs of the majority.

Self-build

So, if you have come to the conclusion that you need this kind of device, but do not have extra funds, then why not make a sandblasting chamber with your own hands. In addition, you need to know that many works are usually performed not indoors, but outdoors. This is convenient and beneficial for the master, but it is quite polluting the world. Although sometimes there is no choice and you have to resort to such methods. The main thing is that the master himself dresses in accordance with safety precautions, since there is no exhaust hood for the sandblasting chamber and the abrasive can be accidentally inhaled.

Therefore, the filter for the sandblasting chamber is the main thing and you need to start construction with this, pay enough attention to selection and installation. Do not forget that ventilation should not be installed in excess, so before purchasing you need to make a project and calculate the required number of devices using the appropriate formulas. In addition, it is important to choose the right sandblasting machine; it must be equipped with remote control, so that the operator can concentrate on one thing and trust the automation with another. It is important that the device itself can turn off if the painter’s health suddenly deteriorates or he loses consciousness. The presence of remote control prevents dangerous consequences for the body and reduces the likelihood of injury. Remember that if you don’t have large parts to process, then you don’t need a huge room.

This is important not only in terms of economic feasibility, but also in terms of safety. The sandblasting shot ricochets off the walls and it must be taken into account that the larger the room, the stronger the blow back from the wall will be. To prevent ricochet, consider hanging the inside walls with special rubber platforms; they significantly dampen the speed of sand movement. Make the floor from a grid so that the used material goes into the receiver from the room. Then you can pump out the used abrasive from there to empty the tank.

Remember, indoor installations are also at risk from flying abrasive material. It is better to place the device outside, and leave only the nozzle holder for sandblasting inside to control the process. Safety precautions must be observed in each case, this is mandatory.

Selecting the device to buy

If you have a small garage in which you and your friends repair cars, then it is better to make a small device yourself, and then just buy Consumables– cheaper and more expedient in terms of spending money. If the scale exceeds those indicated, then think about a larger room.

Before you make a purchase, think about how often you need to use such a device.

First of all, pay attention to the spray gun - it looks like a small handle with nozzles through which air pressure and the desired abrasive are supplied. If you have to active use device, then a self-made spray bottle will not last long, but will simply fall into pieces due to being worn away from the inside by sand. In addition, you need to select the nozzle diameter in advance, taking into account the predicted loads.

Therefore, we recommend considering nozzles made from durable and resistant alloys, the service life of which is approximately equal to the life of the rest of the equipment. Conventional steel and, especially, ceramic nozzles will quickly wear out and will not be able to perform their assigned functions for a long time. Also pay attention to the body. It must be made from durable material, and the pipe that goes to the container with abrasive must be flexible. Pay attention to the compressor. The developed power must cover the needs and during prolonged operation it must not overheat. Availability required automatic system shutdowns.

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Before starting operation, remember the above operating rules; they must be remembered and followed constantly and without exception. The sandblasting room is multifunctional and will help not only prepare the car body for painting, but also perform a lot of other tasks in every area.

Sandblasting is a universal device that is used in industrial and domestic conditions. With its help, you can clean the surface from a layer of old coating, dirt, and traces of corrosion.

There are several ways to become the owner of such a useful household device. The first is to buy a ready-made version in the store. This is the easiest way. Its only drawback is its high cost. The second way is to assemble the sandblaster yourself. This will require investing some effort, but in terms of material costs, this method is much more economical.

How the device works

To understand how to do it yourself, you need to know the principle of its operation. It is similar to the operation of a spray gun used to spray paint (and other paints and varnishes).

The main element of the installation is the compressor. It pumps air, creating the required pressure in all lines. As air passes through the installation, it creates a vacuum. Thanks to this, the abrasive material (sand) is mixed with air and enters the main line. From there the flow passes to the nozzle, through which it exits. At the outlet, a stream of air containing sand is created, which moves under high pressure. It is this that is directed to the surface to be treated.

The diagram of the sandblasting machine is shown in the figure.

Basic Installation Elements

Homemade sandblasting consists of the following parts:

• compressor;

• electrical cable for connecting to the electrical network;

• hoses of a certain diameter;

• fittings for connecting elements;

• taps;

• dispensers.

Nozzle

Another important element is the nozzle, without which the device will not be able to perform its intended functions. The nozzle for a sandblasting machine at the enterprise is made of steel and coated with boron or tungsten compounds. This gives the part wear resistance. Less commonly, ordinary steel, ceramics or cast iron are used for production. But such elements are quickly destroyed under the influence of a flow of abrasive material.

At home, the nozzle for a sandblasting machine can be sharpened using lathe made of steel, using old spark plugs as a material. To do this, take out the metal electrode, which is located inside the candle. True, such a mechanism is characterized short term operation, because it wears out quickly. But its cost is also very low.

Types of devices

The device described above is typical for suction sandblasting equipment. But this is not the only device option. There are only 3 types of sandblasting:

• Suction. This option is easiest to make at home. It is suitable for light cleaning of surfaces. This option differs in that air takes sand from the container and delivers it in the form of a stream.

• Vacuum. This type of equipment operates in cyclic mode. This means that it is ejected to the surface through the nozzle and then sucked back into the chamber for reuse.

• Pneumatic. This type of equipment is used to work on large areas or in difficult to clean places. A homemade sandblaster of this type is a dangerous device from a safety point of view. Therefore, it is not recommended to collect it. This is due to high pressure in the system and high power.

The supply device can be supplied with air or water. The first option is more common, since its design is simpler.

Abrasive material supply

The abrasive can be supplied in two ways different ways, depending on what sandblasting machines are divided into injection and pressure ones.

Pressure devices are characterized by high productivity and work intensity. In them, air flows simultaneously into the apparatus itself and into the container with sand.

The injection method of supplying sand is characterized by low pressure, so it is used when assembling sandblasting with your own hands. In this case, air and abrasive material move along different lines.

What you can collect yourself

Making devices at home involves using materials that can easily be found in your garage. In addition, they apply simple designs that work effectively. Taking this into account, you can be guided by a simple diagram, without any drawings.

You can use a gas cylinder as a container for abrasive material (receiver) into which sand should be poured. The hole for filling the cylinder is located at the top. Air under pressure will enter the receiver through a pipe mounted in the upper part of the cylinder, and, together with sand, will exit through the outlet hose located below.

Materials for making the device

Drawings of a sandblasting machine make it clear what parts are needed for its manufacture and in what sequence they need to be connected. One of these drawings is shown in the figure below.

The need to purchase a compressor, which is the main element of the device, was discussed above. Its capacity must be at least 800 liters. It will need an oil separator to prevent the sand from getting wet.

In addition to the compressor, you will need a container to accommodate the abrasive material. Very often, a gas cylinder with a capacity of 50 liters is used for this. Its design allows it to withstand high pressure inside and mechanical damage outside.

A filter for running water is useful, in which it is possible to replace the filler. Instead of a filter element, silica gel in balls will be poured into the flask (you can buy it at a pet store). The filter is necessary to dry the air before it is supplied to the receiver.

The duration of continuous operation largely depends on the selected nozzle. Inexpensive options(made of cast iron or ceramics) are designed for several hours of operation. In some cases, they last only a few tens of minutes. Therefore, it is better to give preference to parts made of boron carbide or tungsten carbide and capable of withstanding hundreds of hours of intensive work.

In addition, to assemble the device you will need the following parts:

• for air supply (5 m long and internal diameter 10 mm);

• reinforced hose (2 m long and 2 m internal diameter);

• hose fittings for connecting individual parts of the device with a rubber hose into a single system;

• Collet clamp;

• ball valve made of brass (2 pcs.).

• a pipe with a thread and a plug (the neck will be made from it);

• a piece of pipe with the same diameter and three barrels;

• sealant for connections (fumlenta).

When all the parts are assembled, you can begin assembling the sandblaster.

Assembly steps

Homemade sandblasting is assembled in the following sequence:

• Preparing the balloon. If you purchased a used cylinder, it must be emptied of gas. To do this, the valve is twisted completely. The entire container is filled with water, which will displace the remaining gas. After this, working with the cylinder will be safe. Instead of a neck, we screw a pipe with a ball valve. A tee is screwed into it from above, into which two fittings are inserted.

• The supports are welded from 3-4 pieces of reinforcement on the top side of the cylinder. Their length should be sufficient so that the crane does not touch the ground.

• A hole is made in the middle of the bottom of the cylinder into which a tee is welded. One outlet is required for the plug. The second is for the air supply hose (a tubular extension is welded). It is recommended to weld all connections to ensure tightness. You can connect with threads, but then you must use a sealant.

• An in-line filter is attached to the tubular extension using a tee. To the tee - a hose, the other end of which will connect to the fitting at the bottom of the cylinder (near the supports). Connections are secured with clamps. A ball valve is placed at the filter inlet. A fitting is fixed to it, through which the hose coming from the compressor will be connected.

• The gun is assembled from a nozzle, which is connected through a piece of hose to a ball valve. The second end of the tap is connected to a metal tube (about 30 cm).

At this stage, homemade sandblasting is ready. You can weld handles on the sides of the receiver. This will make it easier to carry.