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Summary: When choosing a paint gun, the options range from conventional chop guns that do fine finish work to electric HVLPs that can be used on cars. Learn about high volume, low pressure spray guns with help from a professional painter in this free video on choosing paint guns.
"So you find yourself in need of what gun and what kind of spray equipment to use in certain circumstances. I'd like to cover those things with you today. We will start out with the lower grade of items that people may have in their garage that they do cars and trailers and small finishes with which is this conventional chop gun. It has different controls that fine finishes. You want clear coats and things like that. You feed the material through the top, do your adjustments here, set your pressure on it and it hooks up to a regular compressor. This is what I have used for wrought iron, gates, maybe some doors, maybe the hood on a car things like that. You might want to paint your jalopy, your hot rod with it. Then you're going to move on to another item that we use which is, this is an electric HVLP, high volume low pressure set up. It's like a conventional, it's an electric but it is always constantly, it's got like a turbine in there and there is lot of air coming out of it. This is for really fine finishes for like a garage door. We do walk in doors things like that with it. If you have a lot of doors like 30 or 40 of them to do and you want to use HVLP on that then you want to go to this bigger unit that I have here on my left which is a two gallon pot set up with a two stage turbine on it and air going through it constantly. It's not like it has a dedicated compressor for it. It has a turbine, two stage turbine on here, some of them are three stage. It has like a garden hose that will go to your gun. The material light comes off your pot. It has a little dedicated compressor which gets about 25 PSI on it, maybe 30 that puts pressure to the pot and pumps the paint down and pushes it down and makes it come up through the hose, the pipe in the middle which feeds the material. You want to use this on doors, fine finishes, smooth finish stuff maybe even enamels for bathrooms, cabinets, things like that. This is a high production, high volume, low pressure spray unit. Alright if you find yourself in need of something that's going to pump a little more paint a little bit faster and make the job a little bit simple for you rather than just rolling and brushing you'd want to use maybe a small airless like this. This will do the inside of a house. It will do the outside of a house. You have just got to give it a little more time because it is a smaller airless. It is only a 395 and so you can burn it up if you try to push it too hard. If you want to get something that's a little more durable that is going to hold up to professional use where you are blowing a lot of paint, you are getting a lot of paint on quick, you want to move up to this 695. This thing will handle two guns at 100 feet each and it will keep up with you."
eHow Article: How to Choose a Paint Gun