Materials used to process blades include wood, metal, engineering plastics, fiberglass, etc.
Micro wind turbine blades are usually made from wood by hand, by cold stamping metal or by injection molding
Small wind turbine blades are usually made by hand from metal or fiberglass. Among them, fiberglass blades are the most popular and commonly used blades.
Large wind turbine blades are usually made by hand from fiberglass.