So, while it may work on this project, for future projects, it will create fisheyes unless you thoroughly clean the lines. While effective, the additive will add silicone and other chemicals into the sprayer. The additive is something you should only use if everything else has failed. In case the paint has already dried, it’s better to sand the surface to a smooth finish below the fisheye cratering and then refinish. If you see fisheyes appearing in a basecoat, you should instead allow the color to flash and then spray a mist coat over the affected area to fix the fish eye problem. Sherwin Williams suggests not to use fisheye eliminator in undercoats or basecoat colors. This is a chemical additive used to remove the surface tension, which usually contributes to creating fisheye. However, there is a spraying technique that can solve this problem. If that contamination is deep enough, it will be almost impossible to remove. If the fisheye forms over a knot in the wood, it means that some type of contaminant is trapped inside the knot or cracks. This should remove all the spots on the wood. You can try a combination of 220-grit sandpaper and lacquer thinner if you are spraying pre-catalyzed lacquer on the surface. Otherwise, a chemical stripper is recommended.īut always try sanding first as that is the most effective way to remove the paint and the contamination. However, you must be careful not to damage the surface. If you have coarse grit sandpaper, this will work quite well. The best way to remove paint and lacquer fisheye is to sand the area to remove the contaminant and then use a stripper or thinner to get rid of the finish. So, in that case, you should consider removing all the paint before cleaning the surface thoroughly and trying again. It’s one thing if you only must remove one or two, but dozens can make the effort that seems not worth it. It can be quite tedious to remove the craters and the contaminants if you have many fisheyes on the surface. Just trying to cover over the paint with another layer of paint only means you are creating yet another fisheye. If you see a fisheye developing, the first step should be to remove the contaminant. Of course, all the preparation in the world may not entirely prevent fisheyes from appearing. Removing Fisheye Craters from the Surface This is mainly observed in epoxy resin coatings when poured less than the recommended depth. If any of these contaminants have found their way to the surface or have been trapped in your paint gun, you will most likely face fisheyes problem when painting.īesides surface contamination, coating too thin can sometimes cause fish eyes and pin holes. Such contaminants can vary, but the main ones are chemicals, oil, water, and substances that are silicone-based in nature. The cause of the fisheye is a contaminant, something on the surface that reacts to the paint being applied. You may also know them as pits, craters, or saucers.Ī fisheye tends to show up when you apply a coat of paint to the surface or just after the surface has been coated with paint. You may see them as white dots or simple circles of paint with a separation around them.īecause they look a lot like the eyes of fish, that is where the fisheye name comes from. These are defects that show up as small, circular shapes that have a crater or depression in the center. How Can You Prevent Fisheyes from Happening?.Removing Fisheye Craters from the Surface.
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