How to make a do-it-yourself spray gun for painting a car: step by step instructions
Content
2 channels are formed in the workpiece with a screwdriver, one of which must be at an angle of 90 degrees, after which an additional one is made perpendicular to them. It is important to make sure that they intersect each other, then the spray gun handle is mounted in the horizontal chute, and the end of the rod is mounted in the vertical chute.
The appearance of the vehicle emphasizes the status of the owner, and it can be restored in many ways. One of the most common is the use of modifications of a home-made spray gun with a compressor for painting cars based on improvised materials and without it.
Operating principle
Homemade spray gun is a device for painting a car, consisting of three main parts - a handle, paint storage and a gun with a trigger. It is used for painting various surfaces at home. The principle of operation of the spray gun is based on spraying liquid or paint from a container over the surface of the body by force acting on the handle and varies slightly depending on the type of device.
A container for filling the liquid solution can be placed at the bottom, top and side of the fixture. The choice of position depends on the planned scope. For example, for finishing vertical planes (doors or walls), a more suitable option is with a tank located at the bottom of the device; it is recommended to paint the floor and ceiling with a spray gun with a container located in the upper part.
Simple spray gun
The volume of the tank of an accessory for painting a car can be different - from 400 ml to 1 liter. Large capacity will not require frequent solution changes, however, it can cause severe hand fatigue during prolonged use.
Types of spray guns
The main types of devices used in domestic conditions are mechanical (manual), pneumatic and electrical. The first type is the least productive and requires the direct participation of a person to pump air into the tank and CM.
The pneumatic version is the most recommended for home use, the principle of operation is based on pumping air under pressure from the compressor receiver.
The electric spray gun operates on the basis of a turbine engine and is the second most common in everyday life. To save money, you can make an airbrush yourself in a garage or at home for painting a car.
The advantages of a hand-assembled spray gun
Even a beginner can independently make such a device for restoring the body, the advantages of this approach are obvious:
- there is no need for constant purchase of rollers and brushes, maintenance of equipment;
- smooth application of paint on the surface of the car;
- minimum cost of materials for assembly.
A homemade device can significantly increase the speed of painting work, as well as reduce their cost.
How to make your own paint sprayer
You can make an effective do-it-yourself spray gun for finishing the surface of the machine using various devices, and in several versions. The set of necessary tools differs depending on how the portable spray gun is assembled.
Handy tools for making a spray gun with your own hands at home for the purpose of painting a personal car can be found directly in an apartment or garage. To create an auxiliary household accessory, you can use a standard ballpoint pen, an empty aerosol can, a vacuum cleaner hose, or an extra refrigeration compressor as a base.
Ballpoint pen spray gun
The easiest option for home use. The device is assembled from 3 main parts - a vessel with a wide mouth, a ballpoint pen and a blank made of foam, rubber or plastic. It is inserted into the top of the paint tank, and it is important to ensure that there is no gap between their surfaces.
New spray gun
2 channels are formed in the workpiece with a screwdriver, one of which must be at an angle of 90 degrees, after which an additional one is made perpendicular to them. It is important to make sure that they intersect each other, then the spray gun handle is mounted in the horizontal chute, and the end of the rod is mounted in the vertical chute.
A device based on a ballpoint pen is distinguished by its speed of manufacture - the process takes less than half an hour, ease of use - it is enough to blow the rod to get the paint out. Such a home-made device is effective only when processing small surfaces.
Spray gun for a car based on an aerosol bottle
An airbrush based on a conventional household gas cartridge is a practical and low-cost solution. The following materials are required for assembly:
- one-piece plastic bottle of sufficient volume;
- aerosol can with a workable sprayer;
- camera from a bicycle wheel or nipple;
- hacksaw for metal;
- manual bicycle pump.
A homemade spray gun for painting a car is assembled as follows:
- A nipple hole is made in a plastic bottle acting as a reservoir for paint.
- It is fixed on the inner wall, the tightness of the connection is checked.
- At the spray can, it is necessary to saw off the top in accordance with the size of the bottle neck.
- Parts of the structure are welded in a cold way, which is important for stable fixation of its components.
- The container is filled with paint and air using a compressor with a pressure gauge or a pump. It is important not to exceed the pressure of 2.5 atmospheres.
Do-it-yourself spray gun using a hose from a vacuum cleaner
If it is necessary to cover large areas with paint, a manual spray gun is ineffective - such a process will drag on for a long time. In this case, for painting a car, you can make an effective spray gun with your own hands from an old vacuum cleaner, preferably made in the USSR, since the old-style models provided for the presence of two hoses - an outlet and an inlet. A hand-assembled device can be used with water-based types of paints and varnishes, it is incompatible with powder ones.
A homemade spray gun with high performance for painting a car with your own hands is assembled as follows:
- A standard plastic bottle with a neck of more than 2-2.5 mm and a capacity of less than 1.5 liters is prepared, as well as a copper or aluminum bottle with a diameter of 4 mm and a length of 20 cm.
- The metal container is attached in a bent state to the bottom of the vacuum hose.
- The upper part of the rod is ground to a conical shape and equipped with a brass nozzle, the lower part is mounted in a connector like a plug.
- A holder is added to the tube, screwed with screws or bolts.
- A steel bracket with a hole corresponding in size to the socket is sawn out, while it is important to pay attention to its width and the location of the nozzle and the end of the suction tube on the same level.
It is recommended to test a home-made spray gun without a compressor before starting work on painting a car on a separate surface in order to avoid unpredictable results during use. Pressure adjustment during assembly is done by tightening or tightening the rod; upon reaching the optimum level, it is fixed with mounting foam in a connector glued to the cover of the tank with paintwork materials.
Spray gun for painting a car from a refrigeration compressor
An additional method that increases the speed of painting the surface of a vehicle is to use a compressor from an old refrigerator as the basis for a spray gun. Similar to a device based on a vacuum cleaner hose, in such a home-made design, only water-based paints and varnishes can be used.
It is quite difficult to make a home-made spray gun for treating a car with protective mastic or paintwork materials in a garage or at home, but such a device is the most durable and productive of the above modifications. It can be used to coat and seal vehicle sills and underbody.
Before starting work, it is necessary to create a drawing of the future device, an alternative option is to download the scheme on forums or sites on auto topics. An additional important point is the search for an object that will be used as a receiver, a spent fire extinguisher or a tightly closed hollow metal container is ideal.
Instructions for assembling a homemade spray gun for painting:
- The compressor is fixed on a wooden base in accordance with its original orientation in the refrigerator.
- The compressor outlet is installed.
- 2 holes are drilled in the object that acts as a receiver, hoses are attached to them, while the smaller one is to the outlet pipe, and the larger one is to the inlet.
- A pressure gauge is mounted on the unit to check the generated pressure level.
- The connection of the receiver and the basic design of the device is carried out; the first hose fastens both parts together, the second is attached to the filter to clean the air from foreign particles.
- The spray gun is connected, if necessary, wheels are attached.
A homemade device based on a refrigeration compressor reduces paint consumption, and the noise level from such a device is minimal.
Do-it-yourself spray gun holder
A home-made device for treating the surface of the body is more convenient to use with a special handle. To make the holder yourself, the car owner will need a square of plywood measuring 25 x 25 cm and a hacksaw.
The assembly process does not take much time and consists in cutting a hole suitable for the diameter of the container for storing paint. After that, a handle is inserted into it, the contour is sawn off in accordance with the dimensions. The stand is equipped with legs that act as guides for the correct orientation of the hose.
Pneumatic spray gun for cars
If necessary, a funnel for filtering debris can be fixed to the holder using aluminum wire screwed on with screws.
Manufacturing Safety
The main precautions when assembling a homemade spray gun in a garage or at home for painting a car without a compressor consist of preventing a possible explosion of containers used as tanks for paints and varnishes, as well as monitoring the tightness of joints and welds of homemade devices.
It is also important to consider additional points:
- ensure sufficient air access when working indoors;
- do not allow unauthorized persons to stay near a functioning spray gun;
Unreliable fastening of individual components of a composite structure assembled on a knee can cause paint spatter, resulting in uneven surface treatment and the appearance of defects on the car body.
Tips for using
When painting a car body with a homemade device, it is important to follow not only safety rules, but also adhere to a number of useful recommendations:
- clean the nozzle in a timely manner;
- apply the emulsion evenly on the surface of the body to avoid defects, at an angle of 90 degrees or in a circular motion;
- prepare the necessary paint and varnish materials before starting work.
After use, it is important to clean the unit of paint residues with a water-soap composition and solvent, and dry thoroughly. Compliance with these recommendations will significantly increase the life of home-made equipment when performing painting work.
