The advantages of vacuum bagging are multi-fold and can be identified both structurally and economically. First and most important, vacuum bagging provides equal pressure to all surfaces of the part, whether the part is made up of vertical, horizontal, curved, compound curved or any combination of these. The only limit on the complexity of the part to be bagged is the extent of the planning on the part of the person performing the lay-up process. A uniform external positive pressure and negative internal pressure will aid in expelling air trapped between the core and the laminate thus limiting the possibility of “voids” in the structure.