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You have a few options when it comes to reinforcing the carbon-fiber layer. “Sandwich core” construction is the most rigid reinforcement. This involves a layer of fibrous material sandwiched between the carbon outer layer and a fiberglass backing. We didn’t need a panel that was very rigid (we built a radio block off-plate/ switch panel for our Chevelle), so instead we opted to laminate the back of the carbon with two layers of fiberglass weave. The finished panel is plenty strong, but not as rigid as a sandwich-core construction. Lay out and cut two or more pieces of fiberglass using the low-tack masking tape, so each piece is the same size as the carbon fiber. We cut each fiberglass piece at a slightly different bias so the weaves were at different angles. This adds panel strength because the fibers “pull” in more directions when the panel is loaded. View Related Article
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