While there are options available for low CFM spray guns, they will typically not provide as good of paint break up which can effect your finish quality. In order to be able to deliver sufficient CFM for painting, you will typically need a 2 stage compressor. A 2 stage compressor will provide approximately 4 CFM of air per horse power of the compressor. In comparison, a Single stage compressor which is what most compressor you will find at hardware stores are only delivers about 1 CFM per horse power.
So if you will be using your air compressor for painting or painting cars, you will want to consider a 2 stage compressor with atleast 5 Horse power to properly provide air to your spray gun. In addition to selecting a 2 stage compressor, you will also be able to choose between different compressor types depending on the size of compressor.
Common 2 stage compressor designs include rotary screw compressors and reciprocating compressors. Rotary Screw Air Compressors require less maintenance in comparison to reciprocating air compressors. However, they are not as efficient meaning they do not deliver quite as much CFM per horse power.
In comparison a reciprocating compressor will require more frequent and extensive maintenance including maintenance items like valves and pistons. However, they often provide a longer overall life of use and deliver a bit more air per horsepower. Reciprocating air compressors do have a higher initial cost when considering a larger above 30 HP unit compared to rotary screw compressors.
There is less overspray allowing for more accurate painting and single-pass techniques. There is also a reduction in overall air pollution, and materials are utilized more efficiently. HVLP spray guns can handle primer, paint, and clear coat finishes making it a favorite of refinishing specialists. LVLP or low volume, low-pressure spray guns can work well with most air compressors. Even the less expensive air compressors will work well with this type of spray painters.
Before buying a less expensive air compressor to match with an LVLP spray gun, take a moment to consider what other tasks you may use the air compressor for. Sometimes spending a little more on better quality, the high capacity machine will save you money in the long run.
A smaller fan pattern means that it will take longer to cover a large surface area. Cheap compressors like the California air tools se or the Rolair vt25big would do the job. Portable models can be used in spraying paint on your car provided that they deliver sufficient CFM, air pressure, and have sufficient capacity. Using a smaller HP wheeled portable compressor to paint provides flexibility if you need to move the air compressor around the shop.
Painting cars one day, removing tires the next, and other repair jobs requiring the use of compressed air to run various tools allow you to obtain more use of your investment for a variety of tasks.
If you have a dedicated paint shop, a fixed or stationary industrial air compressor with a sufficient length of air hose will do the job just fine. When you buy an air compressor, make sure it includes a limited warranty in case you need to replace the air tank. Look for moisture trap and lubricated pump in the features. Also, a compressor for car paint requires oil to prevent piston friction, so make sure you get the best synthetic oil possible.
Higher capacity tanks, coupled with larger horsepower and CFM , give the user more flexibility in terms of spray gun choices as well as other uses around the shop. Professional auto body and paint shops usually opt for large stationary air compressors.
In contrast, occasional refinishing enthusiasts opt for portable units that can be moved around the shop to the location they are needed. The size of your budget may dictate the capacity of the air compressor chosen. Consider all of the uses you will have for the air compressor and spray guns. Match the pressure, the CFM, and tank size to the tools you will be using to ensure completing the job professionally.
Spraying the paint also will greatly reduce the amount of time you spend painting , leaving you time to do other things. They are highly efficient and offer a controlled spray with little overspray.
Some HVLP guns are powerful enough that they can be used without an air compressor , while others require a large air compressor to operate. Steps to Painting a Car Get the proper supplies and prepare your workspace. Be aware of rust spots and take proper steps to fix.
Determine the type of paint you are going to use. Sand your vehicle. Wipe vehicle down with thinners to remove dust and particles. Practice your paint spraying technique. Prime the vehicle. Multiple tool use: If you plan to run more than one tool at the same time, you must add the CFM of each tool together to determine your needs. A spray gun normally operates from 0. There is no one-size fits all in air pressure for texture guns.
You have a regulator on your compressor. Set it for 70 PSI to start, and test the spray. Getting or making sure you have the correct size compressor is one of the first things you should do after you decide on the color. We often get calls asking about how many gallons the compressor tank should be to paint a car. This is often a misconception when looking into the painting process. The air consumed is controlled by the paint gun you use. Paint guns like our Concours Paint Gun line can require as little as CFM while a high-end professional gun can require times that to spray paint correctly.
If you already are set on a paint gun you can try and match your compressor to the gun or vice-versa.
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