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Air bubbles can easily get trapped during epoxy resin pouring, leaving unwanted imperfections in your finished projects. Fortunately, there are simple steps and products that can help you achieve a perfectly smooth resin surface.
Why Do Bubbles Form in Epoxy Resin?
Bubbles typically appear when resin and hardener are mixed too vigorously, or when resin is poured over intricate moulds and inclusions. Humidity and temperature can also influence how easily bubbles rise and escape before the resin sets.
Simple Bubble Removal Methods
To encourage trapped air to escape, it’s a good idea to allow mixed resin to sit for a few minutes before pouring. For surface bubbles, gently applying drops of Pure Isopropyl Alcohol 99.9% and lightly misting the surface can effectively eliminate bubbles without disturbing the finish. Always allow alcohol to dry fully before applying any heat, as it is flammable.
When Bubble Removal Matters
Perfecting the bubble removal process is especially important for projects where clear casting or high-gloss finishes are desired. Smooth surfaces not only look professional but also reduce the need for time-consuming sanding or polishing.
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Efficient bubble removal ensures the clarity and quality of your resin creations. Mastering this process will help with every stage of your epoxy work—read more about handling resin residue and other issues on our main troubleshooting page.