Migrating to my own instance, @th. See you all over there!
@[email protected] Low Tech Magazine had an article on building larger blades entirely out of wood to make them recyclable:
"A windmill blade typically consists of a combination of epoxy with fiberglass reinforcements. The blades also contain sandwiched core materials, such as polyvinyl chloride foam, polyethylene terephtalate foam, balsa wood and polyurethane coatings. A 5 MW wind turbine produces more than 50 tonnes of plastic composite waste from the blades alone".
https://www.lowtechmagazine.com/2019/06/wooden-wind-turbines.html