Air spray varnish

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Forum topic by Jerlac posted 02-06-2014 01:55 AM 809 views 0 times favorited 3 replies Add to Favorites Watch
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112 posts in 1911 days

02-06-2014 01:55 AM

I got an hvlp gun and i would like t know at what pressure your shooting 20psi? And if there is some other advice you guys could give me would be amazing thanks

3 replies so far

View tefinn's profile


1222 posts in 2641 days

#1 posted 02-06-2014 02:02 AM

Not really sure what your trying to ask. At 20psi your pressure is 20psi. You need to set the pressure at the compressor to 20psi and you’ll have that at any tool you’re using.

-- Tom Finnigan - Measures? We don't need no stinking measures! - Hmm, maybe thats why my project pieces don't fit.

View Fred Hargis's profile

Fred Hargis

5177 posts in 2697 days

#2 posted 02-06-2014 12:21 PM

I’m also not sure of the question, and the guns are different, and various finishes do take some tweaking. I also never spray varnish, it is so slow to dry the overspray coats everything in the area making a real mess. Other finishes can dry while airborne and just settle as dust. That said, for my conversion gun I usually have the compressor set at 45#, but then the regulator in the gun is set to 15# when the trigger is pulled. But like I said, I’ve never sprayed varnish.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Tennessee's profile


2893 posts in 2718 days

#3 posted 02-06-2014 12:55 PM

For those of us who spray from time to time, I put a splitter on my air compressor. One side provides full pressure, and the other side provides 35psi air, which is where I run my HVLP guns. I keep the water separator before the split. I also popped for two wind-up reels on the wall, one for the guns, one for general use. The gun hose is a much lighter hose, since I do most of my spraying in warmer weather outside and hose gets heavy.

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

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