Sandblasting gun for compressor: TOP 5 best models

1. Lever.
2. Trigger.
3. Nozzle for spraying air-sand mixture.
4. Bushing for connecting a tank or sand supply hose.
5. Sand reservoir.
6. Bushing for connecting the air supply hose from the compressor.

In many ways, a sandblasting gun resembles a spray gun, only the nozzle here is made of a different material and has a different diameter. The principle of its operation is as follows: compressed air from the compressor is supplied through the hose through the bushing ( 6 ). At this time, abrasive is sucked out of the reservoir ( 5 ), which is supplied to the nozzle ( 3 ) of the gun. And the abrasive is blown out of the nozzle under pressure onto the material being processed. Essentially, the gun has an injection method of operation, in which air and sand are supplied through different hoses. Because of this, the performance of conventional pistols is several times less than that of sandblasting machines, and they are much weaker than their larger-sized counterparts.

Operating principles of sandblasting guns

Any sandblasting gun is effective in cases where surface contaminants on metal parts cannot be dealt with chemically, for example, cannot be washed in gasoline or solvent. In addition to contaminants, such cleaning is used before painting, patination and anodizing - this can be a car body, any metal container, shield, etc.

The method of releasing the air-abrasive mixture for sandblasting may be different, although the result does not change Source proinstrumentinfo.ru

Tips for choosing

For the most optimal option, you should pay attention to:

1. Device type. With a tank, the model is suitable for frequent work, but not for decent surfaces. But if you have to work at a distance, and space allows, equipment with a hose will do. There is also a third option - a sandblasting gun with recirculation. The choice is individual.
2. Certificate and test passport. Any worthwhile product should have them.
3. Weight. The design should not be particularly heavy, so that your hands do not get tired and the duration of the work process increases in time.
4. Material consumption. The most optimal in this regard is considered to be a sandblasting gun with an abrasive recycling system, although the task of preferences is solved individually.
5. Field of activity. Choose sandblasting based on your needs and capabilities.
6. Types and availability of nozzles, as well as material of manufacture. One of the best and most durable materials will be alloys with cobalt and tungsten carbide.
7. Attaching the nozzle to the body: the union nut can spontaneously unscrew during long-term operation; in this regard, the threaded pin is more reliable.
8. Ergonomics. The handle should fit comfortably in the hand, and all other components should not cause discomfort during operation.
9. Mounting holes. They make it possible to significantly facilitate the process of processing the desired surface.
10. The characteristics of the proposed sandblasting tool must match the capabilities of the compressor (the compressor must have a pressure reserve of 15-20%).
11. Price. It depends on your capabilities, requirements and wallet size. Products that are too cheap are not even worth looking at, as they are usually made from low-quality materials and will not last long.
12. Other parameters. Before purchasing, it is best to consult with knowledgeable people and specialists and look at reviews of the product you like. They will tell you exactly what to consider when choosing a device for your home, production or workshop.
13. Brand. Choose only a manufacturer that has been proven over the years and under no circumstances recommend purchasing a previously used device.

We wish you pleasant shopping!

TOP 5 most popular sandblasting guns

When choosing a sandblasting gun, buyers are guided by their needs - this is mainly the volume of work performed. In addition, they pay attention to the manufacturer’s brand - a lot also depends on the brand, since manufacturers (especially large ones) try not to damage their image.

Pistol Walmec 50316

The WALMEC 50316 PS/IS gun is used to clean surfaces from various contaminants using sand Source vseinstrumenti.ru
All sandblasting guns from the manufacturer Walmec are made of metal (aluminum and steel), and the handle is covered with rubber. Moreover, its weight is only 0.92 kg with dimensions of 120x80x30 mm, which is not something inconvenient or heavy for an adult. The bore diameter of the nozzle of this device is 6 mm, which provides an air supply of 500 l/min. The sand reservoir contains 1000 ml, so this equipment is recommended for cleaning large areas of about 4-5 m2, that is, you can remove old paint from the car body. The tank of the gun is located at the bottom, so abrasive particles enter the mixer by suction due to the rarefaction of the air mass.

Which sandblasting gun should you choose?

Which instrument should you choose? All of these sandblasting guns will perform their function well. Therefore, you need to choose based on your personal needs. If your budget is limited, then ELITECH 0704.013800 is suitable. or Patriot GH 166B. Such a purchase will certainly not hurt your pocket, but they both do not have a sand tank.

If operating time and productivity are important, then the gun from Wester SSP-20 is perfect. It is designed for long-term use on large surfaces. The quartz sand that is used for working with it is less dusty than river sand. This makes work more comfortable. Although safety glasses are still needed.

How to use a sandblasting gun - basic recommendations

If you understand the principle of sandblasting, then it will not be difficult to master the tactics of sandblasting the surface in order to remove corrosion, paint, varnish and other contaminants. Before starting work, you should prepare the workplace and put on protective clothing. Let’s consider in detail what the process of preparing for sandblasting is:

1. Selecting a work location. It is best to carry out work indoors, since sand scatters over large areas, which complicates its assembly and is also harmful to the environment, depending on the type of abrasive used. Work can be carried out outdoors if it is necessary to remove rust or paint from a gate or fence, as well as other large surfaces
2. Lay oilcloth or linoleum on the floor. This is necessary so that after finishing the work it is easy to collect the sand and use it again
3. Provide good lighting in the room. This is very important, since working in a poorly lit room will result in untreated areas. During work, visibility is reduced due to dust clouds
4. Remove all unnecessary items that do not need processing. If the flow from the gun gets onto the surface, it will damage it.

It is important to choose the necessary protective equipment when carrying out work:

1. Special safety glasses. The following requirements apply to glasses: they must fit snugly to the body and be made of glass. Plastic glass will reduce visibility if sand gets on it.
2. Respirator - and you need to use not a simple mask, but a full-fledged respirator, especially if the work is carried out indoors
3. Thick clothing and hat

After this, you can begin sandblasting work. There are no difficulties with their implementation, since the essence is to remove the surface coating from the workpiece. Depending on the type of material being processed, you need to adjust the pressure and sand supply, and then begin processing. The gun must be held at an angle of 45 degrees to the surface being treated, since it is at this angle that the effect of particle separation from the surface is maximum.

This is interesting!
The duration of holding the tool in one area depends on the thickness of the layer being removed from the surface, and is established experimentally. After finishing the work, the surface must be degreased, and you can begin painting work.

What are the advantages and disadvantages of a sandblasting gun?

Each tool has not only advantages, but also disadvantages. The situation is similar with sandblasting nozzles for a compressor. Their advantages include:

1. Fast and effective processing of various types of surfaces - metal, plastic, wood, glass
2. Ability to access hard-to-reach places, which is often impossible to do manually or with power tools
3. The ability to independently manufacture nozzles. Many home craftsmen make sandblasting guns with their own hands from improvised materials.
4. Large selection of nozzles, differing in external design, as well as the name of the manufacturer
5. High productivity, which has a positive effect on saving time

With the advent of sandblasting guns for compressors, they have gained great popularity. However, if you are not familiar with this device, then do not rush to buy it until you know all the negative aspects:

1. The service life directly depends on the quality of the tool, and the higher this indicator, the correspondingly more expensive the nozzle will be. Cheap models have a short service life
2. Noisy operation
3. The need not only to use high-quality nozzles, but also to periodically replace them when worn out
4. Loss of abrasive material during operation

Another drawback that can be identified is the need for additional surface cleaning and sand removal. However, such manipulations must be performed after any type of processing.

What can you use to assemble a sandblasting machine in a home workshop?

If sandblasting is needed not for permanent work, but for domestic use, then it is cheaper to assemble a mini sandblasting machine yourself. There are several options for this design, depending on what exactly the master has at hand. It will cost less, and it will be more pleasant for the master.

Do-it-yourself mini sandblasting for a small compressor, video

From a gas cylinder, a freon cylinder

This is the simplest design - do-it-yourself mini sandblasting from a cylinder. For it you will need an empty gas cylinder, as well as:

• 2 ball valves;
• a piece of pipe for a funnel to fill the chamber with sand;
• 2 tees;
• hoses with 14 and 10 mm inflow for supplying air and abrasive;
• clamps to attach the sleeves.

Manufacturing algorithm:

• Clean and dry the inside of the cylinder.
• Make holes for pouring sand and at the bottom for a tap.
• Install the faucet.
• Install a tee and mixing block behind the tap.
• A second tap is mounted on the cylinder valve, followed by a tee.

To move the device, wheels must be welded.

From a pressure washer

If you don’t have a gas cylinder, you can easily make a mini sandblasting machine with your own hands using a Karcher high-pressure washer or its equivalent.

For this you will need:

• reinforced hose;
• ceramic nozzle: you can make it yourself or buy it in a store;
• tee with nozzle;
• a pipe for collecting abrasive;
• feed control unit.

This sandblaster works using an electronic circuit. The liquid is pumped, passes through the mixing block and creates a vacuum in the sand supply channel, which, under high pressure, hits the surface to be cleaned along with the liquid.

From a blow gun

This is the smallest version of mini sandblasting with your own hands. Its power depends on the compressor used. To create a design you need:

• blow gun;
• tee;
• ball valve;
• nozzle with clamping nut.

A simple plastic bottle or small fire extinguisher will work as an abrasive tank.

Using a spray gun

To make mini sandblasting with your own hands from a spray gun, you need to prepare the following parts:

• a gun that will work as a mixing valve;
• handle with air supply device;
• plastic bottle as a container for abrasive;
• tee;
• ball valve

Algorithm for assembling the finished device:

• Bore the gun to the desired diameter of the outlet nozzle.
• Attach the mixing tee to the gun.
• Install and attach the supply and circulation hoses.
• The volume of a standard plastic bottle is enough to clean the surface within 30 minutes.

We make a device with our own hands from a fire extinguisher

Do-it-yourself mini sandblasting using a fire extinguisher. This design is completely similar to the device, which is assembled from a gas cylinder. To seal the top, you need to install a cap. You also need to make two holes in the fire extinguisher: one on the bottom, the second on the top.

A leg is welded to the bottom, which is usually made from a round rod or fittings. After assembly and installation of fittings, the device is ready for use.