Weight Plates
How can I paint my rusted steel barbell weight plates after galvanizing them?
I spray painted many steel exercise weight plates. But on some, I realized that I had used a gray Galvanizing Spray Paint for the primer, which will not take the black gloss finish spray paint. The galvanizing paint says it can be re-coated with latex paints. Is there any way to spray paint the gloss black spray paint as a finish coat ( to be harder) ? How can I finish these with a hard shell finish coat?
I have to just shake my head at this.
Spray galvanizing compound is not intended to be painted over. It's not a primer. It's basically just powdered zinc, with a small amount of latex binder so it'll stick to the surface. It's meant to be applied to bare metal, and then left that way.
In any case, painting an object makes galvanizing totally unnecessary and a waste of time.
What you need to do is clean the galvanizing compound off completely with lacquer thinner.
Then, get a can of REAL primer. As I mentioned before, spray galvanizing is not primer, you shouldn't be surprised that your paint didn't stick to it.
I'd also recommend lightly sanding, since there'll probably still be a thin film of compound fouling up the surface.