What needs to be done prior to overlaying core material with reinforcement?

Prior to overlaying core material with reinforcement, it is essential to ensure that any surface contamination is eliminated. Contaminants such as oils, dust, mold release agents, or moisture can significantly hinder the bond between the core material and the reinforcement layers. A clean surface promotes better adhesion, which is crucial for the structural integrity and performance of the composite.

When the surface is contaminated, it can lead to delamination or weak spots in the composite structure. Therefore, thorough cleaning of the core material helps create a reliable and durable bond, allowing the composite construction to achieve its desired strength and performance characteristics.

While sanding the core material and saturating it with resin can be part of the preparation process, they are not as critical as ensuring the surface is free from contaminants. Painting the core material may introduce additional complications and is generally not recommended prior to application of reinforcement, as it could interfere with bond formation.