A primer for galvanized material has been around since at least the 70s. You'd mix in a tablespoon or so of water, which activated its acidic properties.
There's a category of paint now called "DTM," or "direct to metal." It's primer and finish all in one, and I use it on exterior ironwork such as the railings I fabricate and install.
My vote, however, is for the electropencil/sanding...
__________________
"... Liberty is the seed and soil, the air and light, the dew and rain of progress, love and joy."-- Robert Greene Ingersoll 1894
|