Paint fisheye5/19/2023 Everywhere i was reading people were praising this paint for how well it brushes. I chose to go with cabinet coat because of all the good things I have read on the internet about it when googling a waterborne paint that dries hard and flows out well when brushing. I have been using insl-x cabinet coat satin white and went from brushing to spraying with an inexpensive gravity feed hvlp gun from home depot. But the defect keeps on occuring.I've been painting my kitchen doors made of raw mdf for a while now and been struggling with getting a nice finish. All action to track down the root causes has been done. It is in the UV clear coating for plastic camcorder casing. It takes few weeks to find the origin of the contamination! Jordi Pujol One of the ladies in the line uses that cream and contaminate the pieces. I had one experience with a hands care cream called "Atrix". This particular problem just takes a lot of detective work. Then there was this other time(are you getting bored yet?)when the filters that were between the air-dryer and the paint booth never got checked, and they got full of oil, the oil would get pulled into the paint gun feed line and atomize with the paint and produce fish-eyes.Īnother time we had intermittent fish-eye problems, we found that the brake operators were hiding cans of oil that they used for spraying oil on their tooling(and contaminating the air), they hid them because they didn't want anyone taking them away(who cares if they produced thousands of dollars worth of paint rejects, right?) Of course the coolers blew the WD all over the plant. I still don't know what caused them and probably never will.Īnother time I had fish-eyes appear suddenly and it took me 2 weeks to finally track down that the day they started was the day that maintenance sprayed WD-40 into the coolers to lube them. They only appeared in one of our paints, so when we run that specific product the painters turn off the A/C and the fish-eyes are no longer a problem. I recently solved a fish-eye problem simply by realizing that they only appeared on the product during the period of time that the air-conditioner cycled on. All you can do when they appear is look for something that is happening that isn't happening when they aren't present, like maintenance doing PM's, or air dryer malfunction. They are caused by an atomized, petroleum or silicon based product. ![]() Don't bother looking any where else because it's a waste of time. Fish eyes are an air-line or airborne contaminate. I have come to the theory that it must be an air borne contaminant from a nearby factory (since we are surrounded with factories). Even my paint supplier spends endless hours trying to assist me with the problem. The problem is not part specific but is sometimes paint specific. Nothing has changed, no additional processes or chemicals but the fisheyes come and go. My process is consistent with each part produced. I have tried cleaning with Naptha, acetone Acetone, MEK / methyl ethyl ketone, etc but with no resolve. I am in a Class 100 Clean Room and go to great lengths to make sure my parts are cleaned before they enter into the Clean Room. ![]() After some time chasing the problem mysteriously disappears. I have tried many ideas to narrow down the contaminant but always fail. ![]() I Manufacture/Finish parts and frequently encounter Fish Eyes on products. ![]() Plating, anodizing, & finishing Q&As since 1989
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