help with fish eyes

[Guest]

This is my first time posting here i have been looking around this site for awhile and there is some great info here. I have not been able to coat one part in the last month with out getting fish eyes. One of the last powders that shot good for me was a acrylic clear so i thought that was my problem. But since then i have replaced all my air lines on my gun with new ones and cleaned my gun many times inside and out, even using acetone to wipe down all my gun parts. Still had problems with fish eyes. So maybe my air compressor was the problem, so i am hooked up to nitrogen to make sure no water or oil in my lines was the problem but still no luck. I have used multiple powders cleaned my booth and ovens and still not that much luck. The fish eyes have gone from about 10 per test panel to about 3 per panel after replacing my lines but i still need better then that. I have not had any silicone or oils or anything like that in my work area since this started. Any help would be awesome this is driving me crazy. I have using a parker ionics setup also

[pablousmc]

Re: help with fish eyes

yeah i changed the main powder line along with other air supply lines. No i am not doing any painting in there but it is my garage at my house so my bike any other equipment is also in there but my prep areas and spray areas i keep separate. my test panels are the little ones you can get from pbtp the same ones there color samples come on. I am not doing a pretreatment on them just wiping down with acetone then a torch on them and then some times nothing at all but with the same results. Is it possible if i had oil in my lines that some got into the main control box with the air valves.

[Guest]

Re: help with fish eyes

Is it possible if i had oil in my lines that some got into the main control box with the air valves.

I suppose anything is possible. Not familiar with using nitrogen. Are there filters in your air lines that need to be changed? Anyone else have any thoughts on this one?????

Can you take some pictures?

Have you done the napkin test for clean dry air?

[pablousmc]

Re: help with fish eyes

i have done the napkin test and nothing showed up at all. The nitrogen i am using is a 25lb bottle i get filled from local welding shop. The nitrogen is suppose to have no moisture or any kind of contaminants in it i hook the bottle straight to my guns air regulator. I will try and get some pics later on tonight.

[Guest]

Re: help with fish eyes

i have done the napkin test and nothing showed up at all. The nitrogen i am using is a 25lb bottle i get filled from local welding shop. The nitrogen is suppose to have no moisture or any kind of contaminants in it i hook the bottle straight to my guns air regulator. I will try and get some pics later on tonight.

If its clean air then the pictures will help big time.

We (PBTP Forum) will help you get this taken care of pronto.

[pablousmc]

Re: help with fish eyes

here are some pics of what i am talking about they are really hard to see but here they are. I can take some more tomorrow and maybe get a better pic but probably not with my camera

[Guest]

Re: help with fish eyes

Have you tried spraying a panel just like it is with NO work done to it no acetone?

[pablousmc]

Re: help with fish eyes

Nothing different that i can think off the last thing i did that turned out good was black chrome with a acrylic clear. I thought it was the clear giving me all the problems at first but i have cleaned so much.

[Guest]

Re: help with fish eyes

Have you tried spraying a panel just like it is with NO work done to it no acetone?

I am not doing a pretreatment on them just wiping down with acetone then a torch on them and then some times nothing at all but with the same results.

Yes he has. Not that it will make a difference, have you tried both sides of the panel? I assume this happens on all the parts your coating?

Thanks HD I missed the last part of his sentence.

Try this if you can. Have you tried to spray really late at night or really early in the morning>?

I am wondering if heat plays a factor. I know when I coated with no AC in FL I was having these problems. Also if you haven't already clean your oven.

[pablousmc]

Re: help with fish eyes

i will try to spray in the morning before work when its a little bit cooler and the humidity is down. I have cleaned my oven a few times i just did a cleaning cycle on it tonight and havent had a chance to spray anything yet. ill let you know tomorrow how it turns out

[Auto-Cycle PC]

Re: help with fish eyes

What colors have you tried and having these problems on? Have you ordered any new powder and tried it to eliminate the contamination of your powder? Are you using a hopper? Just a few questions I didnt see posed yet.

Jason