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Subject: Re: "Specks" in Chemcraft Pigmented Varnish

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Message Thread:

"Specks" in Chemcraft Pigmented Varnish

4/16/16       
Larry

Website: http://www.superiorcabinetryandmillwork.com

Hi,
I've been spraying finishes for 25 years, but this is the first time that I'm spraying Chemcraft Chemlife 24 Post-Catalyzed Pigmented Topcoat. I'm spraying with Kremlin 20:25 pump and an mvx gun. I'm spraying in a clean room with an open faced booth. The problem I'm having is that when I spray parts laying flat, I get these "specks" in the finish. They are the same color as the paint. And they are about the size of a pin point. I have added 10% of the compliant reducer and also 2 1/2 to 3 ounces of retarder to one gallon of top coat. I also tried adding an additional 5% of the reducer. But, the problem is still there. This is a problem that I have had in the past and have never figured out what causes it when it occurs. I tried straining the paint and the filter on my pump and the filter on my gun is totally clean. In fact, the filter on the gun is new. I try to be consistent in the way I spray everytime. With other finishes I have sprayed the same way and the finish is totally slick with no "specks". And, now the "specks" have returned. I have no idea what else to try. Does anybody have any idea what is causing these "specks" and how to eliminate them? Thank you for your help.

4/17/16       #2: "Specks" in Chemcraft Pig ...
RobertJ

Check you air and fluid hoses. If you are using 'Kremlin' made hoses, I have had problems in the past with their black air hose decomposing. Don't ask me why

4/17/16       #3: "Specks" in Chemcraft Pig ...
Larry

Thanks Robert. I appreciate your input. I actually tried changing the blue fluid hose on my Kremlin system. But, it didnt make any difference. I'm actually sure now that this problem is solvent pop. I'm sick and tired of dealing with this reoccurring problem. I've been spraying finishes for a long time. And, it is so hard to find solutions with problems that arise. The "tech guys" with the finishing companies know less than I do most of the time. And, their try this or try that approach usually does nothing more than waste my money and time. I wish there were actual finishers who were the reps for finishing products. Maybe then people like me could get actual solutions to my problems from the finishing companies instead of guesses. I'm just ready to get this issue resolved and know how to take care of it if it arises in the future. Thanks again Robert.

4/27/16       #5: "Specks" in Chemcraft Pig ...
Shane

Sorry to hear your still having trouble Larry.... Did you get the microscope like I suggested? Have you talked to the area chemcraft Rep. Ron M. ?

10/24/16       #6: "Specks" in Chemcraft Pig ...
francis

maybe they flat it down and the powder is not dissolve properly or maybe when they tinted your pail some dry pigment fell into the pail. you could send a piece to your supplier and some wet material and they can send it to be analyze.

 

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