When mixing resin, what is the recommended technique?

The recommended technique for mixing resin is to slowly stir the mixture. This approach is crucial because vigorous shaking or rapid stirring can introduce a significant amount of air into the resin, leading to bubbles that may adversely affect the final product’s strength, clarity, and appearance. Air bubbles can create weak points and compromise the structural integrity of the material, which is particularly important in aerospace applications where reliability is paramount.

Slow stirring allows for a more uniform mix without incorporating excessive air. It helps to combine the components thoroughly, ensuring that the resin hardens correctly and achieves the desired mechanical properties. This technique also allows for a more controlled mixing process, enabling the user to observe any irregularities or problems in the mixture before it sets.

Letting the mixture sit without stirring would not adequately blend the components and could result in an uneven cure, affecting both the physical properties and the performance of the resin once it is cured. This further emphasizes why slow stirring is the optimal choice when preparing resin for use in aerospace applications.