When should release agents be applied?

The application of release agents is crucial in the composite manufacturing process, particularly when creating molds for parts. The correct practice is to apply the release agent before the part is laid up, ensuring that there is sufficient coverage to prevent the composite material from bonding to the mold.

Applying the release agent at this stage ensures that when the composite is cured, it will separate easily from the mold, allowing for a smooth extraction of the finished part without damage to either the part or the mold. This preventive measure is essential for maintaining the quality and integrity of the mold for future use.

Other practices mentioned, such as applying a release agent before each layer of gel coat or only after the part has been laid up, do not align with effective mold release techniques. These methods could lead to incomplete release, resulting in difficulties during part removal, surface imperfections, and increased wear on the mold. Hence, proper timing and coverage of release agents are critical for successful mold operations.