Common difficulties with epoxy resin

While epoxy resin is a popular and versatile material, there are some common problems that people may encounter. Here are a few of the most frequently mentioned concerns:  Bubbles: The formation of bubbles is a common complaint when working with epoxy resin. Bubbles can appear during the mixing or pouring process and may not always escape naturally, resulting in an uneven or less desirable finish. Proper techniques such as degassing, using a heat gun, or employing a torch can help reduce or eliminate bubbles.  Yellowing or discoloration: Over time, epoxy resin can undergo a process called yellowing, where it develops a slight yellow tint. This can occur due to exposure to UV light or certain environmental conditions. Some users may complain about the yellowing effect, especially when working with clear or light-colored epoxy resin. Using UV-resistant epoxy resin or applying a UV-resistant topcoat can help minimize yellowing.  Strong odor: Epoxy resin typically emits a strong odor during the curing process, which can be bothersome to some individuals, particularly those sensitive to chemical smells. Working in a well-ventilated area, using a respirator, or opting for low-odor epoxy resin formulations can help address this concern.  Long curing time: Epoxy resin generally has a longer curing time compared to other types of adhesives or coatings. This extended curing period can be seen as a drawback for those who prefer quicker results or need to complete their projects within a short timeframe. It is important to follow the recommended curing time provided by the manufacturer and plan accordingly.  Sensitivity to temperature and humidity: Epoxy resin can be sensitive to temperature and humidity during the curing process. Extreme temperatures or high humidity can impact the resin’s curing time and may affect the final result. Adhering to the recommended temperature and humidity ranges specified by the manufacturer can help mitigate potential issues.  Difficulties in achieving a perfectly smooth finish: Some users may find it challenging to achieve a completely smooth and flawless surface with epoxy resin. Factors such as improper mixing, application techniques, or environmental conditions can contribute to an uneven finish or the presence of imperfections. Practicing proper mixing, application, and finishing techniques can help improve the overall finish of epoxy resin projects.  It’s important to note that not all users may experience these issues, and many of them can be addressed or minimized by following proper techniques, using high-quality materials, and adhering to the manufacturer’s instructions. Download PDF here