[patrickt]

I had planned to use an adhesion promoter, and not an etching primer, because I thought it looked like powder coating and some of the professional paint forums recommend using a primer designed predominantly for plastic surfaces when painting over powder coating. Apparently powder coating is more akin to plastic than it is to metal or paint. When painting over powder coating, the smart money recommends cleaning, degreasing, scuffing, degreasing, adhesion promotion, base coat, and clear coat.