Skim coating a FEP (Fluorinated Ethylene Propylene) corner can be quite challenging, especially if you want a perfectly smooth and seamless finish. From my own experience working with FEP surfaces during resin printing projects, I've found that preparation and technique are key to success. Firstly, it's important to clean the FEP corner thoroughly to remove any dust, oils, or leftover residues. Using isopropyl alcohol works well for this purpose. After cleaning, lightly sanding the surface with fine-grit sandpaper can help the skim coat material adhere better. When applying the skim coat, use a flexible spreader or putty knife to evenly distribute the compound. Start with a thin layer to avoid lumps or drips, then gradually build up the thickness with subsequent coats if needed. Be patient and allow each layer to dry completely before applying the next. One tip I learned is to work in small sections to maintain control over the application and prevent the skim coat from drying too quickly. Temperature and humidity can affect drying times, so keep your workspace well-ventilated but avoid strong drafts. Finally, once the skim coat is fully dry, gently sand the surface again to perfect the smoothness before painting or sealing. This extra step ensures a professional-looking finish and increases the durability of your project. Overall, skim coating FEP corners takes practice but following these steps will improve your results and give you a high-quality surface perfect for many creative applications.