Leon
Ester resin is what 90+% of boats and car bodies would be molded from, epoxy is more hi tech and is used more so in the marine industry. Cost is a big factor as you have seen, big thing is that you can put epoxies onto polyester ( as in glue or joining, filling and fairing) but you can not put polyester onto epoxy.
Most boat / runabout construction was a layer of gelcoat first then using a chopper gun, you sprayed yourself a boat or a car body. Epoxy would be too expensive. Hi tech race boats use hi tech epoxies that are often cured / activated in an oven.
Both the boats I built were from polyester resin. (probably stinks more than epoxy too)
Cheers
Ester resin is what 90+% of boats and car bodies would be molded from, epoxy is more hi tech and is used more so in the marine industry. Cost is a big factor as you have seen, big thing is that you can put epoxies onto polyester ( as in glue or joining, filling and fairing) but you can not put polyester onto epoxy.
Most boat / runabout construction was a layer of gelcoat first then using a chopper gun, you sprayed yourself a boat or a car body. Epoxy would be too expensive. Hi tech race boats use hi tech epoxies that are often cured / activated in an oven.
Both the boats I built were from polyester resin. (probably stinks more than epoxy too)
Cheers