Hello. Although I’ve only had my Wagner 2900 HVLP System for 2 years this is the first time I’ve had major trouble with spraying latex paint. I am spraying a kitchen island black with Ben Moore Regal Aquaglo (Semi gloss). I would of used the BM Imprevo (satin) which I’ve had good resluts with, but was told it is not available in black. I am having a lot of trouble with the Regal Aquaglo. Of course I can’t be sure it’s the paint, but I don’t suspect other possiblities such as contamination, temperature, humidity, unclean work space… As the paint starts to dry there are some subtle swirly or pool like effects on the various surfaces where the color is slightly cloudy. At first I thought I thinned too much with water (although I didn’t add much). So, on the 2nd batch of paint I addded Floetrol, but got the same results. Sure would appreciate some help on trouble shooting this. Thanks, Kalena
Replies
when spraying semi gloss(and glossier) finishes, it's important to have the surface primed with a dedicated primer, or flat paint.
If this isn't done, often the surface looks patchy because of uneven gloss absorption.
Hi,
Thank you for your comments. What you said makes sense. I'm not familiar with the term dedicated primer, especially in relation to semi-gloss. Also, do you know if it's easier to spray latex flat or a gloss. By easier I mean smoother results, less chance of orange peel.
Kalena
the term "orange peel" applies to oil based paints, lacquers etc, but not latex.
It's always easier to get good results with flat paint instead of a gloss, no matter how it's applied. but you should be fine, just mix the paint thoroughly. without seeing the finish, it's hard to diagnose any more.
That's interesting because I've heard the term referenced to both solvent or water base products, basically describing a "rough surface" condition. I most recently came across it in a Technical Data article by Jeff Jewitt on the Homestead Finishing website. It was an article on General Tips For Spraying Paint With HVLP Guns. The problem of orange-peel was mentioned under the Spraying Latex Paint section. Anyway this is one of the problems I'm having on my project. I've made some adjustments that have minimized it, but not gotten rid of the problem entirely.
Thanks again for your help, Kalena
I am not familiar with that particular spray set-up.
But I have a Cap spray (also made by Wagner), which is a 4 stage machine, and it does a wonderful job with latex paint . As it happens I use the same BM AquaGlo.
Not all tips are created equal, and you need one that is designed for more viscous material, than would be the case for lacquer (as an example).
I haven't called them for years, but I do know that Wagner used to run a really first rate customer service department. I would call them and ask if your particular machine is suitable for latex. They will also ask you what tip you are using, so you should have that info as well.
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"It is what we learn after we think we know it all, that counts."
John Wooden 1910-
Hi,
Thanks for the input. The Wagner 2900 is an HVLP gun run off of a 4 stage turbine as well. I was using a 1.3mm needle and switched to a 1.8, but it didn't improve the results. I'm still getting a subtle orange peel that shows up more because of the black color. Also, still don't know what the slight patchy, cloudy color is from. When you spray the BM Regal paint, roughly where do you have your fluid and air flow adjustments?
Kalena
I have the 9100 set-up (Cap spray). The tips are not marked in mm, just reference numbers-- 2 for light bodied materials (stains), 3 for lacquer, etc. and 4 for latex paint. As far as the settings are concerned, I can't really advise you. I always start with a middle range setting for both, and then tinker with them on pieces of scrap before I start with the job. I do very little spraying with latex, but I am baffled by the problem you describe, since orange peel is usually not associated with latex paint. I can only guess you are spraying too close to the surface and/or have the gun set for applying too much material.If I were you, I really would call the 800 technical service number. Here's the link to their web site. I tried to look up the number myself, but I couldn't get the site to load up properly right now:http://www.wagner-group.com/portal/sitemap_spray,44224,747.html********************************************************
"It is what we learn after we think we know it all, that counts."
John Wooden 1910-
Traditionally, I think OP has been associated with solvent-based products, but as I've researched the problem I've found it described as a latex paint problem as well, simply to describe a "rough surface" condition. Anyway, I am definitely having this problem with my project. Strangely, one of the suggestions is that your not spraying close enough to your surface. I have made improvement and minimized the "bumps". I'll keep fiddling with my adjustments, and see how smooth I can get it. I waon't be anxious to spray with black semi-gloss again. It shows every little imperfection.
FYI - I think our systems use the same needle sets. I found a conversion chart on the Gleempaint website under the "parts" section, in case you ever need to know mms. Thanks, Kalena
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