After applying a release gel to the mold's surface, the process begins by placing fiber textiles into the mold. These textiles are prepregs — composite materials containing a high-strength fiber that has been pre-impregnated with resin.

Once the molds have been filled, you vacuum the air out of the mold cavity and place the whole assembly first in a vacuum bag — this step enables equal distribution of pressure across the workpiece. An absorbent material, or bleeder, inside the bag facilitates easier air removal and absorbs any excess resin that may bleed out during the curing process. After removing the air from the bag, the container goes into the cpmpsite autoclave.