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- - paint gun done gone , need a new one. (http://forums.pelicanparts.com/off-topic-discussions/1056354-paint-gun-done-gone-need-new-one.html)

Quote:

Originally Posted by afterburn 549 (Post 10804089)

I am not all tuned up on HVLP so I wanted a couple to choose from and try out.

Fool around with pattern on a big piece of cardboard. Back off main needle thingie two turns for starters.

Pressure numbers I can't say for sure as I have a 3/8's hose 50' long. I usually do 30-35 at the tank. Surely less at the gun. It can vary a bit with temp but warmer is always better.

Professional HVLP require a special type of hose and I suspect it's to thwart the flexing of traditional rubber hose. However, if you bleed the excess pressure in the line off first and then keep the trigger pulled to where air comes out but no paint it won't build that bulge of pressure at the end of a pass if you let off completely.

Another way to say it is the tank says maybe 50psi before I pull the trigger. If I pull the trigger with no paint coming out, I can drop it to 30. That's where I like to paint and while I am painting I am either letting air only escape or laying paint.

After painting, tear the gun down and drop it in lacquer thinner or MEK. Every time. When using a hardener additive drop it in the goodness and mechanically clean with an air hose and them little needle thingies.

Quote:

Originally Posted by Bob Kontak (Post 10804415)

keep the trigger pulled to where air comes out but no paint it won't build that bulge of pressure at the end of a pass if you let off completely.

Thanks Bob, I hadn't thought of this.

Good skills. It looks fantastic!

Love my Iwata LPH400lv, its very forgiving. Topped with the disposable cup system. Lower cost guns might spray well but the overspray from them is horrible. Check out Southern Polyurethanes for great epoxy and paint

My own personal thoughts... Are that it's all about getting the correct viscosity. I painted an old VW beetle with an electric sprayer intended for painting houses - it looked like it had just come out of the factory. Haha, I painted it on the footpath outside the house when I was about 18.

Now I use a Devilbiss Gti Pro lite, I think that's called a Tekna Pro lite in the US.

Quote:

Originally Posted by afterburn 549 (Post 10856390)

I shot 3 part Acrylic on with an entry-level Devlibliss and really worked well!

That looks soooo good. Nice work.

Now school me because I always thought acrylic enamel was not used with a hardener.

Mind you, I used acrylic enamel in the 70's-80's from Martin Senour (NAPA then) and they never mentioned a hardener. So that's the basis of my knowledge and I've always made that assumption.

When I painted the 911 with Glasurit 22 line in the early 2000's they called it Urethane with hardener.

Quote:

Originally Posted by afterburn 549 (Post 10857546)

I just don't paint enough to know much.

Thanks for the info. Looks like you know enough. Good job.