Van's RV Fiberglass Techniques EAA SportAir Workshop - EAA Watch in HD on YouTube! Share on Facebook! Van’s RVs and similar homebuilt aircraft are largely constructed by working with sheet metal, but there’s more involved in the completion of these airplanes. Eventually, some fiberglass work is going to come up, which a lot of builders find difficult after becoming accustomed to working with metal. EAA’s Van’s RV Fiberglass Techniques SportAir Workshop class is the perfect solution.