How to Prime & Paint Magnesium Metal
- 1). Degrease the magnesium by scrubbing it with an alkaline cleanser.
- 2). Apply a chromic acid treatment. Follow the directions on the chromic acid treatment kit carefully to avoid accidental burns.
- 3). Neutralize the acid as directed by the labeling that came with your specific kit. Rinse the surface and allow it to dry.
- 4). Apply blue painter's tape to areas you don't want painted.
- 5). Apply a zinc chromate spray primer. Allow the surface to dry for two hours.
- 6). Apply a zinc chromate spray paint in the same manner as you did the primer.
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