Im new to fiberglass and such for finishing sheeted surfaces. Can I use polyester resins used to fix scathed corvettes as found in auto parts stores for this application?
One gallon of resin (bluish green) costs about $20.00 vs. hobby resins (amber colored) that costs $25.00 per quart? Also, I saw in a magazine that a guy finish-painted with Rustoleum paint a Home Depot item. Is this a good choice? Ive had bad luck with polyester resins. I cant ever get the right number of drops. It is very climate dependent. One time Ill use 6 drops and the stuff starts setting up in 5 minutes. The next time Ill use 4 drops and the stuff never sets up. Polyester melts through foam like a hot knife through butter. Im sure a lot of guys have used it for sheeted foam wings and it is probably safe. I would not be concerned about that part. If you like the resin, then apply it sparingly and be sure there are no open seams in the sheeting for the stuff to go through. I know epoxy costs more, but if you buy it from somewhere online in a larger quantity its not as bad. Plus a gallon of this stuff will last many years. If I use more than 4 ounces of resin on a plane Im using to
