New carbon fiber catamaran from Brødrene Aa Finishing FINISHING Composite structures are typically not flat so core materials need to be shaped or have sufficient conformability to match the part shape. WHAT IS FINISHING? Finishing refers to the possibility to shape and design structural core materials to suit application needs, whether related to processing, design, weight or surface finishing, for instance. WHY DOES FINISHING MATTER? The benefits of choosing a suitable finishing option include cost-effectiveness and efficiency in creating curvature as well as the elimination of the need for external flow media. The choice of finishing depends on: Shape of the application (single curved, double-curved, very curved or slightly curved surfaces) Manufacturing process (finishes are adopted to suit different manufacturing process such as prepregs, vacuum-bagging, hand lay-up, RTM, infusion or other techniques) Success criteria, such as Minimizing weight (configuration, width and diameters of grooves, cuts and perforations have a big influence of the final weight of the application/product) Minimizing cost (process time and fill weight and process times are both influenced by your choice of finishing) Obtaining a high surface finish (besides fibers or resins, your choice of finishing also has impact on the quality of surface finish) Minimizing environmental impact (optimized finishing results in a reduced consumption of raw materials and consumables) Maximizing quality (resin flow and wet out , and thereby also final quality, are affected by the choice of finishing) Here you can see a selection of the most widely used and preferred finishing options. For in-depth information about finishing, download our Finishing Guide, which is part of the Diab Knowledge Series. 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