You can't work fiberglass like metal. It can't be welded and it fractures before it bends. That's partly why fiberglass parts in complex shapes tend to be expen

You can't work fiberglass like metal. It can't be welded and it fractures before it bends. That's partly why fiberglass parts in complex shapes tend to be expensive - they must be shaped at the time of manufacture before they cure. Fiberglass is a fiber reinforced resin which is typically built by laying down thin fibrous sheets in molds and "painting" them with liquid resin. Also labor intensive and hard to automate.