Vacuum bagging (or vacuum bag laminating) is a clamping method that uses atmospheric
pressure to hold the adhesive or resin-coated components of a lamination in place until the
adhesive cures. (When discussing composites, “resin” generally refers to the resin system—mixed
or cured resin and hardener—rather than unmixed 105 epoxy resin.) Modern
room-temperature-cure adhesives have helped to make vacuum bag laminating techniques
available to the average builder by eliminating the need for much of the sophisticated and
expensive equipment required for laminating in the past. The effectiveness of vacuum bagging
permits the laminating of a wide range of materials from traditional wood veneers to
synthetic fibers and core materials.