Hey Guys,
I've run into an issue that i'm having some trouble resolving. I've searched the forum and I see other's have described the same problem, and there was never any resolution to the issue.
I am using the Production clear, with Very Slow Hardener. I am using a 5 Stage Turbine with an Apollo 7500GTO gun. I have the .5mm, .8mm, 1.0mm and 1.3mm setup.
I took some time off from painting for about 2 months. Previously I was not having any problems at all.
Now whenever I spray my clear, on the first coat I am getting what appear to be bubbles consistently all over.. I am also getting some debris that looks like very small "fishing line" thats very small in size pin tip. If I spray light coat, the problem actually is worse. If I spray a double wet coat, it helps improve but still has issues. After the clearcoat has cured for about 4-6 hours, I get what looks like actual solvent pop, millions of galaxy looking dots. On black it really stands out as shown in picture below.
I've ruled out that its solvent popping because it happens if I spray very light coat and it happens seconds after spraying the first coat.
From what I read it sounds like ISO Clumping, the isocynates reacting with moisture. My concern is that I am using a turbine system which is suppose to be moisture free. I am also painting indoor with the temperature being 60F. Previously in the summer the temp would be around 70F when I wasnt having problems.
To try and fix this problem I've done the following:
Installed a room dehumidifer and my humidity is below 30%
I've used all the tip sizes from .5 to 1.3
I've tried retarder and using reducer in various combinations. I've used as much as 30% retarder.
I've tried different guns.
I went to local paint supply and bought some 2:1 ratio Euro Clearcoat, that did the same exact thing to eliminate the possibility of my clear being contaminated.
I've mixed up clear and warmed it up to about 70-80 degrees and still the problem remains.
Does anyone have any suggestions on what else I should try?
If the problem is "iso clumping" can I shoot the clear with no hardener added onto a throw away panel? Will this test confirm that its the isocynates in the hardener that is reacting with moisture?
Or is it possible that the clearcoat viscosity is thicker because its winter and 60F and it cant "flow" and let the bubbles rise? Would heating the panel and heating the clearcoat to say 100 make it runnier without the need of reducing?
My only curveball that I dont understand is that there are significant amount of mobile dealership painters who use turbines. They spray when its snowing outside without any issues.
This is really frustrating. Here is some pictures and a video.
On a black part, it really looks bad once it cures.
I've run into an issue that i'm having some trouble resolving. I've searched the forum and I see other's have described the same problem, and there was never any resolution to the issue.
I am using the Production clear, with Very Slow Hardener. I am using a 5 Stage Turbine with an Apollo 7500GTO gun. I have the .5mm, .8mm, 1.0mm and 1.3mm setup.
I took some time off from painting for about 2 months. Previously I was not having any problems at all.
Now whenever I spray my clear, on the first coat I am getting what appear to be bubbles consistently all over.. I am also getting some debris that looks like very small "fishing line" thats very small in size pin tip. If I spray light coat, the problem actually is worse. If I spray a double wet coat, it helps improve but still has issues. After the clearcoat has cured for about 4-6 hours, I get what looks like actual solvent pop, millions of galaxy looking dots. On black it really stands out as shown in picture below.
I've ruled out that its solvent popping because it happens if I spray very light coat and it happens seconds after spraying the first coat.
From what I read it sounds like ISO Clumping, the isocynates reacting with moisture. My concern is that I am using a turbine system which is suppose to be moisture free. I am also painting indoor with the temperature being 60F. Previously in the summer the temp would be around 70F when I wasnt having problems.
To try and fix this problem I've done the following:
Installed a room dehumidifer and my humidity is below 30%
I've used all the tip sizes from .5 to 1.3
I've tried retarder and using reducer in various combinations. I've used as much as 30% retarder.
I've tried different guns.
I went to local paint supply and bought some 2:1 ratio Euro Clearcoat, that did the same exact thing to eliminate the possibility of my clear being contaminated.
I've mixed up clear and warmed it up to about 70-80 degrees and still the problem remains.
Does anyone have any suggestions on what else I should try?
If the problem is "iso clumping" can I shoot the clear with no hardener added onto a throw away panel? Will this test confirm that its the isocynates in the hardener that is reacting with moisture?
Or is it possible that the clearcoat viscosity is thicker because its winter and 60F and it cant "flow" and let the bubbles rise? Would heating the panel and heating the clearcoat to say 100 make it runnier without the need of reducing?
My only curveball that I dont understand is that there are significant amount of mobile dealership painters who use turbines. They spray when its snowing outside without any issues.
This is really frustrating. Here is some pictures and a video.
On a black part, it really looks bad once it cures.
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