White vinegar a good prep for painting over glossy aluminum?
I know white vinegar--a mild acid--is just the ticket for micro-etching galvanized steel to improve the adhesion of primer/paint, but what about aluminum fixtures that have some kind of serious glossy paint baked on? Should the gloss be "knocked off" before spraying with latex house paint? Will vinegar do the trick here as well?
Experiments will be performed on scraps, but perhaps the RKIs here can save me some time and trouble.
Thanks in advance, Fix... ;')