Fiberglass yosonkhanitsidwa yopopera yopopera imakutidwa ndi makulidwe otengera, yogwirizana ndi unsaturated polyester ndi vinyl ester resins.Kenaka amadulidwa ndi chopper, kuwaza ndi utomoni pa nkhungu, ndikukulungidwa, zomwe ndizofunikira kuti zilowerere utomoni mu ulusi ndikuchotsa thovu la mpweya.Pamapeto pake, osakaniza a galasi-resin amachiritsidwa mu mankhwala.