Do-it-yourself Sandblasting From A Gas Cylinder: How To Make A Sandblasting Machine From A Freon Cylinder According To The Drawings? Manufacturing Scheme

2024 Author: Beatrice Philips | [email protected]. Last modified: 2024-01-18 12:09

Sandblasting machines are different. On sale you can find a lot of different models that differ from each other in technical characteristics and capacities. You can not only buy a high-quality device, but also make it yourself. In this article, we will learn how you can make a good sandblast from a gas cylinder.

Safety engineering

Before starting work, even an experienced foreman should familiarize himself with the safety rules.

Even when the homemade equipment is ready, the user still needs to be careful and tidy. By keeping safety in mind, a person can avoid many negative consequences.

To design homemade sandblasting equipment, the master must use only high quality materials and tools . All components must be in good working order. From the cylinder, which in the future will act as the body of the apparatus, it is imperative to etch out excess gases (if the cylinder is freon, it is necessary to get rid of the residual freon). This should be done very carefully, but carefully so that there are no residues in the tank.

With the finished device, you should work indoors or in an open space, which are removed from residential areas. It is also better to stay away from outbuildings . This is because sandblasting can harm poultry and other animals. It is also better for people not to be too close to home-made equipment, especially if it has not been previously tested in practice. Before starting homemade equipment, it is recommended to pay attention to the following:

• all connections and hoses must be absolutely tight;
• it is necessary to ensure that the hoses of the structure do not twist, do not stretch too much and are not pinched anywhere;
• the compress must be grounded so that the operating equipment does not shock the operator.

Users who will work with homemade sandblasting equipment must wear protective clothing … These include:

• a special helmet or shield that can effectively protect the head of the master from injury;
• one-piece jumpsuit or other high-density closed clothing;
• glasses;
• pants made of thick material;
• durable gloves without damage;
• high sturdy boots.

When using the equipment in question, it is recommended to use a high-quality respirator or a supercharged helmet and cape.

If during the assembly the master made incorrect calculations, then during the launch the sandblasting risks rupture of the tank and valve, which can provoke serious injuries. That's why it is strongly not recommended to neglect the safety rules … It is best to cover open areas of the body with dense woven materials or rubber components.

What you need to work

Self-production of a sandblaster from a gas cylinder is quite simple and quick. To carry out all the necessary work, the master needs to prepare a number of tools and materials.

From the materials you will need the following:

• gas cylinder;
• special gun for sandblasting;
• high-quality hoses without defects or damage;
• fittings, tees and the like;
• pressure gauge;
• oil / moisture separator;
• pipes (both round and shaped);
• 2 wheels;
• compressor of sufficient power;
• paint for metal.

It is very important to prepare quality tools for work that work properly.

Only with reliable tools will the master be able to build sandblasting equipment simply and quickly. Let's consider which positions will be needed:

• Bulgarian;
• high-quality welding machine (the person making sandblasting must know at least the main basics of working with such equipment);
• adjustable wrench;
• drill;
• roulette;
• vice.

The person will also need to prepare all the necessary drawings for work . They will need to indicate absolutely all the dimensional parameters of the future structure, indicating the location of all the main sandblasting nodes. Even if the technique is planned to be made from the smallest propane cylinder, it is not recommended to neglect the drawing up of drawings. Having a clear plan at hand with all the necessary notes, it will be much easier for the master to make a sandblasting machine. Due to this, it is possible to avoid a large number of errors.

Build process

High-quality and reliable sandblasting of sufficient power it is quite possible to make it yourself . Many craftsmen make a similar technique from a regular gas cylinder. If you strictly follow the step-by-step instructions, you can build an excellent sandblasting machine that is in no way inferior to the purchased options. Let us consider in detail what stages the scheme of self-manufacturing of the equipment in question consists of.

Balloon preparation

First, the master will need to carefully prepare the cylinder for the main work. This stage should be taken very seriously. This is due to the fact that used up gas cylinders can explode, which often entails dire consequences. Let us consider in detail how it will be possible to safely and quickly prepare the balloon for further procedures:

1. First you need to cut off the handle from the cylinder . A grinder is ideal for this.
2. It is necessary to ensure that the tank valve is always closed .… It is recommended to cut the handle higher so as not to accidentally cut the cylinder itself.
3. Next, the tap will need to be carefully unscrewed … If you are working with a very old cylinder, you may notice that the faucet on it has turned sour. In this case, it will "sit" on the tank especially firmly and tightly. The cylinder will need to be clamped in a vice, and then take an adjustable wrench. If you don't have enough strength, you can find a long pipe and work with a kind of lever.
4. After that, all the contents that remain there will need to be drained from the cylinder .… This should be done as far as possible from open flame sources.
5. You will need to pour water into the tank up to the very neck … It is possible to start cutting the balloon while the liquid is still in its inner part.
6. For reliability, the container can be rinsed several times and filled with water only after that .… As long as there is water in the cylinder, there will be absolutely nothing to explode there, but one must take into account the fact that condensate may end up on the surface of the container, and subsequently it can catch fire.

Ripples

At the top of the cylinder, you will need to cut a new hole, and then attach a piece of pipe there by welding (both internal and external threads are suitable). This part will act as a neck through which sand or other abrasive component will be poured into the tank. For the tube, you will need to find a plug with a threaded connection.

The hole will be very convenient to make with a plasma cutter.

You will need to weld 2 more squeegees . One should be on the side and the other at the bottom of the container. All welds must be perfectly sealed. You will need to screw on the taps on the squeegees and make sure that the workpiece is tight by pumping air into it through a compressor. If there are still gaps in the base, they can be easily detected thanks to such manipulations. After that, the surface of the cylinder will need to be thoroughly cleaned. For such actions, a grinder with a brush-type nozzle is ideal.

Making a nozzle

The nozzle is an important part of the sandblasting design. You can buy it in the store, or you can make it yourself. To make such a part, you can use a metal rod with a length of 30 mm and a diameter of 10 mm . You will need to bore the inner hole of the specified part to 2.5 mm for a length of 20 mm. The part that remains will be bored to a more impressive diameter of 6.5 mm.

Legs

For homemade equipment, you can make the simplest frame base from round and profiled pipes.

The product will be more convenient if you equip it with a pair of wheels. With these additions, the sandblast will easily move from place to place when needed.

After fixing the listed elements, the workpiece can be painted in any color so that it does not corrode.

Attaching elements

The final stage is the assembly of the equipment structure . Tees must be screwed to the squeegees located in the upper and lower parts. On the tee that will be at the top, an important part should be fixed - a moisture separator, and with it a pressure gauge and a tap with a fitting for further connecting the hose.

A tee is also installed in the squeegee located below. Then you will need to wrap 2 fittings and a hose in it. After that, the master will only have to connect the hoses.

Also, do not forget about connecting a sandblasting gun. This part can be bought at a specialty store at a low price.

Sometimes purchased pistols have to be altered a little in order to adjust for homemade equipment, but such modifications are not required in all cases. Also, rubberized handles will need to be installed on a homemade structure. If there are no such parts in stock, it is permissible to use pieces of dense rubber hose instead . After all the above procedures, the master can proceed to testing homemade equipment.

Testing

To test new home-made equipment and make sure it is working properly, you will need to prepare sand (or another suitable abrasive).

The abrasive component can be dried a little beforehand. This can be done at the stake.

Next, the sand will need to be thoroughly sifted through a regular kitchen colander. It will be possible to pour the abrasive into the balloon through the watering can.

After this stage, the equipment can be run for testing. The recommended pressure is at least 6 atmospheres. With such parameters, sandblasting will work very well, and the master will be able to fully verify its effect. Appliances must release a sufficient amount of air. The smallest capacity can be from 300 liters per minute. It is advisable to take a larger receiver.

Using the installed taps, it will be necessary to adjust the optimal supply of the abrasive. After that, it will be possible to proceed with the first treatments. So, for the experiment, any old metal part that needs to be cleaned from rust is suitable. These can be old and stale tools (for example, an ax or a shovel).

Helpful hints and tips

Craftsmen who planned to independently build high-quality sandblasting equipment from a gas cylinder, it is worth taking on board some useful recommendations:

• Most often, cylinders with a volume of 50 liters are used for such work .… Before starting all the manipulations, it is advisable to carefully examine this part for defects, damage and holes.
• To make the device as efficient as possible, it is recommended to use a high-quality compressor of sufficient power . Its optimal performance should be 300-400 liters per minute.
• It is most convenient to use cylinders that have special protection around the tap . This part may well serve as a convenient support-stand.
• Assembling equipment from a gas cylinder is in many ways similar to making sandblasting from a fire extinguisher . If you want to build an apparatus from this device, you can use the same scheme of actions.
• To make a good sandblast with your own hands, the master must be able to work with a welding machine … If such skills are not available, it is advisable to seek help from friends or to the services of professionals. Without the slightest knowledge, it is not recommended to independently undertake welding work in relation to a gas cylinder.
• To work with homemade equipment and the process of its manufacture, it is recommended to stock up on several pairs of protective gloves at once … They will quickly deteriorate and be consumed, so the master should always have a sufficient supply at the ready.
• Do not be afraid to use cylinders for work on which there is a faulty valve .… It will still need to be removed.
• Before the first test of home-made equipment, it is important to make sure that you have not forgotten about anything and that all the details of the structure are high-quality . In the future, it will be necessary to check the condition of such equipment each time before starting it. This is one of the most important safety rules.
• If self-assembly of sandblasting from a cylinder seems too complicated and dangerous for you, it is better not to risk materials and your own health .… It is advisable to purchase factory equipment or turn to the services of specialists.