First, EdgeWater sprays the gel coat on the inside of the mold. Then it layers in all the dry goods such as knitted and multidirectional fiberglass cloth and Divinycell coring. Next, the mold is wrapped with a heavy plastic bag attached to vacuum hoses on one end. Resins enter the bag at the other end and are drawn through the dry goods, infusing them with exactly the right amount of vinylester resin, with no air voids. Vacuum bagging takes human error and guesswork out of the production process.