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HVLP Do's and Donts with latex - Wagner CS 8000 - Kinda Newb

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Forum topic by PatrickIrish posted 01-04-2014 12:24 AM 805 views 0 times favorited 1 reply Add to Favorites Watch
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PatrickIrish

39 posts in 711 days


01-04-2014 12:24 AM

I have a Wagner CS 8000 HVLP. I’ve used it off and on but never for finishes that needed to be smooth and shiny…..until now. Luckily both projects were for my sister and the work looks great to her. I on the other hand want a glossy finish and have been getting very very tiny bump like wrinkle finish.

I don’t know the tip I’m using. I have 2 of them. One is much larger than the other. I tried using the smaller one with black Behr semi gloss and it was terrible. I switched to the bigger tip and it was decent. Finish was still wrinkle but could have been from the first coat with the wrong nozzle.

Today I was spaying basically the inside and outside of a cabinet using Behr premium ultra primer in 1 semi gloss latex. I mixed a little XIM extended and started with the bigger tip. Paint didnt seem to flow much, not much paint came out. I switched the smaller tip and that helps a lot….BUT…I would still get a drip every time I let go of the trigger. The gun is a Wagner Conversion HVLP…looks to sell for $120+ online.

Any tips to get more consistent paint and no little dots coming out? Is it a matter of paint thining and tip combination?

What about the back of the compressor where the hose turns into, I can adjust the air too, would that help?


1 reply so far

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Kelly

212 posts in 1610 days


#1 posted 01-05-2014 07:01 PM

Even when using my airless, with its gazillion pounds pressure, I, occasionally, have to filter my paint. Other times, I can just go at it, even with my four stage turbine (similar to yours). Of course, to use latex in the latter, I generally thin a little, but we’re only talking teaspoons of water in a quart.

My first guess, on the dots, is, insufficient atomization. Try just a teaspoon more of thinner. After all, you are only shooting at around 8psi. Too, though I’ve never used it spraying, you might experiment with some Flotrol, if you’re doing latex, and Penetrol, if you’re doing oil. If you paint much at all, you can use the rest of the bottle on a brush job.

Meanwhile, make sure you follow recommended spray patterns and techniques. Over-spray will undo your previous good work and I’ve never been a fan of trying to polish latex.

My gun is the one that came with my turbine. They run about four hundred for replacement, but I’ve used a Harbor Freight gun on a Graco three stage and got fair results from it.

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