With this method one can make products of large dimensions (for yacht hulls from 30/40 meters) and consists in positioning dry, on the mold, the glass fibers, reinforcements, inserts and all the components necessary for the realization of the piece. After the insertion of separators and distribution pipes, it closes the whole with a film of cellophane carefully sealed all around the whole perimeter, by the application of vacuum between the mold and the film, from a container it sucks the catalyzed resin.