Originally Posted by 302 Z28
If your talking about the Glazecoat that comes in a tube and is air dry...I hate the stuff, it sands differently than primer or bondo. I would just mix up a small dab of filler and smear a thin layer into the pin holes. Then a light wet sanding and it's done.
If you're talking about that red lacquer glaze in a tube, I agree; it's worthless.
However, in the Land of Rust, pinholes are a real red flag, oh Honorable Moderator, and if you do fill them, typical polyester fillers won't work. The rust will come back, and it will come back fast. Poly fillers absorb water, swell, and promote rust. Whatever you use better be impervious to water and swelling. I've done a few rustorations, and the epoxy filler is your friend.