Fish eyes in primer

Here is my guess, does not look like coming from shop or floor because of pattern, looks like either a air line build up and then it cleans itself out or its coming from you.

Try next spraying with panel as close to air intake as you can or open big door and have the panel right there to spray, won't hurt a thing, that will tell you if coming from floor or shop.
Also you may try one of those Orange gun screw on filters but if coming through the line it will be contaminated after one panel.
Where a paint suit and cover your head, also.

Also looks like you need about 5lbs more pressure at the gun.
 
Thanks Barry. I did a couple more tests on the hood and shot some other pieces no problem. There's definatly something going on with the hood and I can't put my finger on it.

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OK, now lets think about this, when you sprayed the small pieces, how had the compressor been used in the last two hours before spraying.
How was the compressor used before doing the hood?

We now know its not the floor or shop, so that leaves you and the compressor as likely culprits.
 
Check your deodorant. Some cause fisheyes and when doing a hood the air may flow just right to catch your pits.
 
i have posted this before but about 4 years ago i had a big fisheye problem, it was only with clear though. had the problem for 6 months. i checked everything. finally figured it out. it was my mixing cups. as soon as i changed cups problem instantly disappeared. only with clear. primer and base mixed in the same cup would not cause the fisheyes. weird and its probably not your problem because your only on horizontal surfaces but sometimes it can be strange things that you wouldn't even think of. something is obviously airborne and settling on the car.
 
Thanks for the input guys. The more I have been going over this in my mind, I could have also picked up contamination on the hood when I had it upside down on a table with a blanket under it (I was sanding the underside). I wasn't as careful as I should have been prepping the topside and susequent priming sessions may have trapped the contaminents in the primer and further blocking and wet sanding has uncovered them.

Whatever the cause, I don't think I have cronic problem with my equipment or spray tactics (I tried various tests last night with different cleaning methods and shoots test areas on different panels). The bigger issue is how to deal with the contaminents in the primer now. I'm leaning toward sanding w/ 180 through 320 and spraying epoxy only slightly reduced (tried this last night and was much less prone to fish eye). I don't mind going over a regular epoxy coat w/ 600 to prep for base.
 
sometimes it is safer in the end to start over. i dont use tapwater anymore because it has contaminents in it unless it is filtered.
 
Well a huge thanks to Barry!!!!!!! I called him on Friday and talked about my problem. He agreed it sounded like the contamination was already in the primer already on the panel and more sanding wasn't going to help. He suggested I clean the surface and spray another coat of 2K primer as that would be resistant to fish eye. DON'T sand, but scuff w/ a scotchbright and then spray the epoxy sealer. It worked like a charm and I just finished laying down three coats of base and no fish eyes to be found!!!!!

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very nice. looks killer! barry has saved my sanity on more than one occasion. the real test will be direct sun light down the road...
 
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