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Posted

I currently have a Finex HVLP spray gun but am not liking how it sprays. time after time I end up with orange peel. I have tweeked the paint and air valves to try to find the right setting but I still have problems. The guy at the auto store said if I buy a more expensive gun I will end up with little to no orange peel. I have the money to buy it, it's just I would like some advice on a good gun to get.

Currently I am only spraying a two part polyurethane but am planning to spary colors soon, as I am almost ready to spray my custom JPM.

Please, any help would be greatly appriciated.

Posted

Here I'm no expert but on his tutptial LGM posted that the orange peel is a problem with the HVLP guns. Because they transfer a lot of paint to the surface the paint doesn't lay as nice as with an regular gun. Even of hte American Hot Rod show when they painted the black Roadster they said it.

Posted

There are basically two types of gun. The HVLP uses what the name says, a hgh volume of fluid and shot at low pressure. Because of this it doesn't atomize as well as the other type, the traditional high pressure gun. The drawback to this type is that you get a lot of overspray. Also your transfer rate, how much stuff actually goes on the guitar rather than in the air is crappy with a traditional.

To minimise the orange peel make sure that you have thinned out your finish a lot. This is different for evry finish and weather condition. Temp and humidity have a larger influence on HVLP than conventional. Also, I use retarder,

wWhich slows down the drying time and allows for better flow out.

I have been a professional finisher for 25 years and it took me about six months to get the hang of HVLP when I first converted, but now I wouldn't use anything else.

American Turbine makes good basic guns for a realistic price, and they show up from the manufacturer, new on eBay all the time.

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