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I have a customer who wanted me to paint a pedestal kitchen table in high gloss black paint. I used a HVLP sprayer and thinned the Benjamin Moore Super Spec Urethane Alkyd Gloss Enamel with Naphtha as indicated by the sprayer. The temperature here in NY was in high 30's to low 40's. It took a few days for the 1st coat to completely dry. I put another coat on it for extra protection and I am waiting for that to dry (painted yesterday late afternoon). My problem is that the paint has the orange peel effect to it. Can I sand it and apply the paint with a brush to get a smoother finish? I have been painting furniture for years but usually use latex or chalk paint. I have never worked with enamel before.
 

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Naphtha could be your problem, It evaporates too fast or you might be thinning to much?. I would give it another coat and thin the paint with good ol paint thinner (mineral spirits). One of the great properties of enamels are that they level out easily. something is off in your procedure.

OR simply change the needle size, are you using the correct one?.

I would only consider brushing as last resort, don't you want the best possible finish?.
 

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Discussion Starter · #3 ·
Thank you for the reply. I absolutely want the best finish possible! I am using a 1.5 needle. I also have a 2.0 - would that be a better choice? I will also try using mineral spirits.
 

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It really depends on type of hvlp gun you are using, compressor size, the cfm's your gun needs and tank provides as well as the psi's you have at the gun that will decide your tip size. How much are you thinning down the oil? 30%?
Get you a piece of wood and do a couple practice rounds...try a 1.3 tip...?
 

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Sanding would be your best option. You might need to thin the paint more as hvlp units need thinner product. Naptha is the solvent of choice for dark colors as it breaks down the pigment better than regular thinner. Lot's of tint in black.
 

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With a little tinkering oil will usually spray great out of an HVLP. I too would just reduce with thinner. Use a viscosity cup if you can't judge by sight and also get a sheet of masonite and practice on the smooth side just before spraying.
 

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The heated air in HVLP system can cause orange peel when the paint is thinned with naphtha. That'll work fine with airless or AA, but not so well with HVLP. That's especially a problem with urethane enamels. We just finished an entry (door + sidelights) with that same paint thinned with mineral spirits and it worked great.
 
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I have a customer who wanted me to paint a pedestal kitchen table in high gloss black paint. I used a HVLP sprayer and thinned the Benjamin Moore Super Spec Urethane Alkyd Gloss Enamel with Naphtha as indicated by the sprayer. The temperature here in NY was in high 30's to low 40's. It took a few days for the 1st coat to completely dry. I put another coat on it for extra protection and I am waiting for that to dry (painted yesterday late afternoon). My problem is that the paint has the orange peel effect to it. Can I sand it and apply the paint with a brush to get a smoother finish? I have been painting furniture for years but usually use latex or chalk paint. I have never worked with enamel before.
Did you ever figure this out? I am using an HVLP Turbine System, I looked at the specs for the paint, it says do not thin and only recommends spraying with an airless sprayer. I have tried not thinning it and thinning it slightly with Flood pentrol. I get orange peel in in both cases. I have tried a 1.3, 1.4 and 1.5 mm tip and have not found success. Any advice would be appreciated.
 

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I’m sure it’s dry now it’s only been 7 years to the day! Do these fools look how old these threads are?


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Yes, I noticed the post was pretty old, doesn't mean he didn't figure out some good advice to pass on, or has come up with a better solution since then. This post was the only thing I could find referencing the same issue I was having. If you know of a better place to look, I appreciate any advice you have to give.
 

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We spray oil enamel hvlp all the time, rust scat satin, p23, impervo.... use corotech brushing reducer or xylene and a 1.5mm with apollo 7700 8-9psi. Thin your material until individual drops on a paint stick are one second apart.
 

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TBH I've never used a ford or other viscosity cup so I couldn't say, I just thin it until it 'feels' right

edit: I shouldn't say never, I have tried a couple times as they come included with the apollo I just thought it was a waste of time and another thing to clean.
TBH- same for me, but for multiple cups and consistency (of consistency) it would take some of the guesswork out of it.
 

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Thanks for the advice. When you say until the drops are one second apart, do you mean after the initial stream drips from the stick?
A ford cup measures viscosity. #4 is an orifice size.
use a stop watch and time how long it takes to drain from cup. Thin to about 8 seconds. I’m not an expert in this method.

The stick method is a visual guesstimate. Thin paint until it flows off the stick the same way every time- coco’s suggestion was to space the drips about a second apart.
 
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