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Old 05-19-2011, 06:15 PM
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Help with a single stage run

Well I painted the front of my van with Nason single stage white. As I was comming around the front the air hose go caught on the bumper and held the gun up and caused a bad run. Also I'M having issues with orange peel and dry spots. how can I fix the run? Can I recoat single stage at a later date? I'm thinking of wet sanded it with 1200 then repreping the paint and spraying another coat. I'm using a Astro Evo with a 1.4 tip. Air pis trigger ulled 19psi. 5 turns out on fluid and 2 turns out on pattern. Any thoughts?

jEFF

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Old 05-19-2011, 07:49 PM
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Thats a nice avatar you've got there!

The orange peel and dry spots could be caused by several things, but with nason I've found you will always get bad peel if you don't start out with a medium wet coat. The wetter you get this first coat, (without running it off the panel) determines the overall outcome of the job. I will only slightly turn up my volume knob when I'm ready for my second and final flow coat.

Now, spraying like this you MUST allow for proper solvent flash off, which depends on the temperature you're spraying in and how heavy you're layin it on.

I've found that Nason's reducers are pretty dead on when it comes to temperatures and t-sheet flash times. You can turn out some really nice work with this affordable ss.

You can recoat, but you'll need to do panel. can't really spot it in.

1200 will never knock down that run. Its pretty tough paint. If it was me, I would just load up some 320 on the da or hard block and kill the run. then wet 400 the panel out and re-spray.

the dry spots... just slow down and focus on what you're doing. keep your gun the same distance off the panel and release the trigger only for a moment after each pass.


Good luck!
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Old 05-19-2011, 08:39 PM
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first coat

I notice after shooting my first coat I can still see the epoxy primer is some areas. After reading your post I'm guessing I'm not getting in on heavy enough. It's 68 degrees here and I put on the second coat after 20 minutes. I think I'm rushing because the fluid knob is almost falling out of the gun and I'm still not running the paint. Do I have to scuff the entire pannel to recoat? Thanks

Jeff
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Old 05-19-2011, 11:01 PM
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Nasson paint usually has a vs number (value shade) rangeing from vs 1 to vs 7. Dupontes DTM epoxy primer sealer can be mixed to the right value shade to get the best coverage for the color you're spraying. vs 1 is white sealer and if sprayed before your first coat of ss you shouldn't see any primer showing through.
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Old 05-20-2011, 07:01 AM
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Quote:
Originally Posted by dirtracer8c
I'm using a Astro Evo with a 1.4 tip. Air pis trigger ulled 19psi. 5 turns out on fluid and 2 turns out on pattern. Any thoughts?

jEFF
19 lbs? i paint with 27-29. turns mean nothing. you need to adjust the gun against the wall every time you paint.


http://www.southernpolyurethanes.com...your%20gun.htm
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Old 05-21-2011, 04:44 AM
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Gun setting

I went by the pressure that the gun make sugested. I do tape paper on the wall and shoot it from aroun 6 inches or so. I not able to get a cigar pattern with this gun no matter what I do. The pattern seam heavy in the center and misted ontop and bottom.

Yesterday I sanded my run with 1200 wet and it remove it. The I tryed buffing the dullness out of it. I now see a shade of grey primer comming threw. I'm going to resand the hood and shoot it again.

Jeff
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Old 05-21-2011, 05:38 AM
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well if you cant get a correct pattern you know something is wrong. try more air and test your pattern again. i wouldnt repaint until the gun is right even if it ment buying another gun. you are just asking for trouble.
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Old 05-21-2011, 05:04 PM
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Quote:
Originally Posted by dirtracer8c
I went by the pressure that the gun make sugested. I do tape paper on the wall and shoot it from aroun 6 inches or so. I not able to get a cigar pattern with this gun no matter what I do. The pattern seam heavy in the center and misted ontop and bottom.

Yesterday I sanded my run with 1200 wet and it remove it. The I tryed buffing the dullness out of it. I now see a shade of grey primer comming threw. I'm going to resand the hood and shoot it again.

Jeff
Crank the fan open more than 2 turns, and or turn up the air pressure is what I would try.
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