HVLP Spraying

Old 08-16-01, 12:10 PM
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I am having trouble using my HVLP sprayer. I cannot seem to maintain the "wet" edge, so to speak. I keep getting an uneven finish that you can clearly see from an angle. I am using a satin Behr wall paint to cover an new plaster but painted wall. Also it is taking forever to cover the existing white wall and I am applying my 4th or 5th coat. Is this unusual?? It seems to be making the paint darker than planned. Any advice would be greatly appreciated.

Bill Kehn
Old 08-17-01, 05:18 PM
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Let's take a look at the possible causes - you can decide which merits investigation. These are listed in no particular order.

1- Viscosity of material too high - not thinned enough.
2- Needle/orfice configuration not correct for material.
3- Material flow valve shut down too far.
4- air pressure (at head) inadequate.
5- Gun too far from object being sprayed (unlikely).
6- Gun needs cleaning.

I said in no particular order, but I'd check the first three closely, especially if this is the first time you've used this material with this gun.

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