People who are fond of airbrushing often have to do a do-it-yourself compressor for an airbrush. It is important to choose a compressor that will meet all requirements and allow you to perform all the necessary operations. With the help of a hose coming from the compressor, air is supplied to the airbrush.
The design of a homemade airbrush compressor.
Choosing a compressor, you must first pay attention to the maximum working pressure and performance. The ability to determine the place of the forthcoming work will facilitate the choice If the workshop is equipped in a multi-storey residential building, even for the first floor, quiet operation of the compressor is important (often to the detriment of power). And if there is a fully-equipped workshop in the garage or in the enterprise, you can ignore the noise level and choose a compressor in accordance with the required power.
For the manufacture will need:
- compressor from the refrigerator;
- fire extinguisher case;
- emergency valve;
- pressure switch;
- check valve;
- hose clamps;
- oil separator;
- fuel filters.
How to make a compressor for the spray?
Scheme of the compressor for the spray gun.
You can make a compressor for the airbrush and independently. To do this, use the compressor removed from the non-working refrigerator. Reliability and durability of this mechanism does not cause doubts, because by its purpose it is constantly connected to the electrical network, it works for many years and does not suffer much from possible surges. Refrigerators produced in Europe, differ from domestic lower noise levels and good ergonomics. This compressor is already equipped with a pressure switch and a receiver. Using it, you can avoid turning and welding work, inevitable when assembling a compressor from scratch. The advantage is the low budget of such a compressor.
Unscrew the compressor from the refrigerator. It is not necessary to perepilivat or to bite its tubes as metal shavings can get to the compressor. If possible, the relay is also dismantled if it is in working condition. It is required to choose a capacity that will work as a receiver. This mechanism is needed for uniform supply of compressed air, the stock of which reduces the wear of the mechanism. Often it is made from a water pump hydroaccumulator or from the body of an old fire extinguisher. You need to take care of the presence of an emergency valve with a pressure gauge, which is useful in case of failure of automation. The model is required to select, based on the response pressure. The advantages will be the ability to relieve pressure manually and the presence of a handle for this.
It is necessary to check whether the compressor is working. To do this, the input voltage is supplied to the installation. To ensure air circulation, the flattened tubes are initially straightened. In the standard case of such tubes 3: one takes the air, the second releases, and the third is intended solely for routine maintenance and is mostly sealed. But to determine which hole is the entrance, and which - the output, you can only work. All wiring before supplying voltage is checked and insulated additionally if necessary. If the compressor is turned on and supplies air, determine the exit and the entrance, carefully marking their location with arrows with a pencil or marker.Back to table of contents
Creating a receiver from improvised means
Compressor assembly scheme.
The balloon is best used seamless: it is more durable. From the body of the fire extinguisher is necessary to unscrew the charger. Using a small and powerful flashlight, carefully inspect the inside of the balloon. If rust or something similar to it is present, the inner surface must be carefully cleaned. The easiest way to do this is with the use of special anti-corrosion mixtures, which are poured in a small amount. The entrance is sealed, and the balloon is shaken for a few minutes, after which it is opened and liquid is poured from it. If necessary, the operation is repeated.
All these manipulations are necessary, because if rust forms flakes and dust, then these particles will fall into the airbrush and spoil the work. In case all the details of a homemade compressor need to be brought to a single color scale, the outer surface of the cylinder is also prepared by grinding the paint layer to metal.Back to table of contents
How to make a compressor: assembly
Before assembling, it is necessary to find the corresponding tube in the compressor and change the oil, then closing the hole with sealant. The oil is drained through a sealed non-working tube, which, when opened, requires caution so that no metal or solder particles can get inside. The most convenient way is to remove the tip along the edge of the solder. To do this, it is cut from all sides and carefully broken along this line. Special lubrication is necessary, since in its absence the equipment will quickly fail. In some designs it is more convenient to install a capillary flow, and sometimes it is better to pour a bath into the crankcase, which continuously lubricates the entire crank-connecting rod mechanism.
Capacity for the receiver with the compressor attached to the sheet of plywood or board on the bolts, clamps or brackets, as the compressor should be easily moved and be as compact as possible.
There are also attached start-up relay, which is more convenient to arrange the bottom, and the oil and oil separator. Placement of all elements assumes free access to them at any time. A filter for cleaning the engine is always put on the inlet tube, and a filter is also installed between the receiver and the compressor. This is necessary in order to protect the system from dust, inevitably present in the air in different quantities. A check valve is always installed at the inlet. During the entire assembly and installation, silicone sealant is used on all joints.