Never had this request before and not sure about proper prep. Have a fireplace frame and door which is brass. The customer wants it black. I figure that the best solution is a high temp black which is no problem, but not sure how how to strip/prep the pieces for powder. I was thinking about blasting with AO, scrubbing with Simply Green, wipe with MEK and then powder. Seems reasonable, but not sure if I am missing something? Anyone have ideas, or ever PC’d over a brass piece?