How much should I thin the paint to spray with a HVLP gun? - AVS Forum
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post #1 of 8 Old 04-27-2004, 09:35 AM - Thread Starter
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I'm using a Porter Cable HVLP gun.

The Behr metallic silver paint says to thin it with 2 ounces of water per quart, but the paint still seems to be way too thick for my gun. Can Floetrol be added to the silver paint to slow down the drying time?

As far as normal latex paint goes, should I just keep adding water to it until it’s thin enough, or is there a maximum amount of water that can be added to the paint?
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post #2 of 8 Old 04-29-2004, 11:02 PM
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latex no more than 8oz to a gallon but you can use Floetrol to thin it more I think
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post #3 of 8 Old 04-30-2004, 10:09 AM - Thread Starter
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Thanks for the input. It looks like I'm going to need to order a larger nozzel for my paint gun if I want to spray any kind of latex paint.
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post #4 of 8 Old 04-30-2004, 11:13 AM
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Or buy a pressure feed type of sprayer.
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post #5 of 8 Old 04-30-2004, 11:33 AM
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Quote:
Originally posted by GRIFFIN1
Thanks for the input. It looks like I'm going to need to order a larger nozzel for my paint gun if I want to spray any kind of latex paint.
1.5mm or 2.mm ..........are nozzels most use for latex be sure to run compressor full open for max air flow
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post #6 of 8 Old 05-03-2004, 10:49 PM - Thread Starter
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Got a 2.0mm nozzel today, it does a much better job with the silver paint than the original 1.5mm. I'm still not too impressed with the results though. I haven't had the chance to try regular latex paint, but I'm sure it will be easier to spray than the silver paint.

A bird decided to take a dump on the screen while it was drying. Maybe he was just trying to tell me what he thought of my screen. :) The paint was dry, so it wiped off without any problems.
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post #7 of 8 Old 05-04-2004, 11:34 AM
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Start with a pint and add water until it works. I've painted shutters, etc with a regular spray gun using that technique. You may have to spray more coats. Just remember your final ratio...
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post #8 of 8 Old 05-04-2004, 08:54 PM - Thread Starter
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I should have mesured how much water I used, but I didn't think about it. I ended up using about 2 parts paint to 1 part water. This worked for the Silver and the Silver Screen paint even though I used much more than the 2 oz of water per quart that is recommended to be the max on the jar of paint.. I sanded the silver I painted yesterday and put on a new coat today. This is my first experience with a paint gun, and I think I'm finally getting the hang of it.

My finished product looks good, but I don't know if it is really much better than blackout cloth. I draped some BO cloth over the screen to compare. The BO cloth seemed to have slightly more gain, but at the same time, it looked a little washed out. I'm happy with the new screen, but I built my frame so I can easily replace the the hardboard screen with a new one if I decide to try a different paint formula.
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