Spraying primer with HVLP gun, What am I doing wrong? |
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Spraying primer with HVLP gun, What am I doing wrong? |
bondo |
Apr 18 2005, 07:57 PM
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#1
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
Ok, I tried out my new HVLP gun. I was spraying high fill primer. The output was similar to what you get from an airless sprayer for house paint. It literally looks like an orange.
Here are a few things that could be contributing factors: 1. Never used a HVLP gun before 2. 3 year old primer that says "use within 6 months" 3. Cheap Harbor Freight spray gun (no instructions besides an exploded diagram) The primer had settled out and needed serious stirring. I did get it mixed, but it seemed thick. It said thinning wasn't necessary, but after I thinned it a little it worked better, but it still wasn't "flowing out". I didn't want to overdo it and get runs. This is the gun I have HF HVLP I did like how I could spray outdoors in the wind without mega-overspray problems. |
jasons |
Apr 19 2005, 08:10 AM
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#2
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Jackstand Extraordinaire Group: Members Posts: 2,002 Joined: 19-August 04 From: Scottsdale, AZ Member No.: 2,573 Region Association: None |
It looks like you are getting good advice on gun setup. The tip you use and pressure are definitely important.
I would like to add though, high build primer should have some orange peel. I don't think that should alarm you too much. You are supposed to sand the high build with 220 until the car is straight. Once you start sanding, the orange peel will go away. Its called high build because it has big material in it to fill minor imperfections. That material will create clumps and cause orange peel. That is also why you need a large tip for your gun. Do you know about blocksanding with contrasting color coats? That is how you get your car razor straight. You will probably shoot the primer 3 or 4 times before you are done if you are blocksanding the car. |
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