jojokeo wrote:For what it's worth, always use a primer otherwise risk chipping that you ordinarily wouldn't get and it provides a nice smooth and clean base.
with rustoleum I had the exact opposite, the first 8 or so pedals I built I used rustoleum clean metal primer, all are chipped, and with minimal use. then I started just going paint directly on metal and none have chipped since. Primer is good but not with rustoleum in my experience. the biggest thing I found for durability is polyurethane clear coat over the paint.