mikeschn wrote:It's polyester resin from US Composites. I did not add any surface wax to the mix for the first coat. It's the first coat I am trying to sand.
The next coat will have the surface wax, which should make it easier to sand.
No metered pumps. I used a 1/2 teaspoon measure for the hardener, and an accurately marked plastic bowl for the resin.
Mike...
That is why it will not sand. You need the wax in the resin to be able to sand it. You should be just fine to coat the un-waxed resin with waxed resin and continue sand after it cures. I did the same thing when I glassed in a new deck in my boat.