Reply to "Seeking Advice Concerning Magnesium Wheel Reconditioning"

Thanks George, I have finally tracked down a pdf from the original manufacturer of magnesium (the UK company was called Elektron) at this link:  

Surface Treatments for Magnesium Alloys in Aerospace & Defense

It talks about first pretreating the magnesium casting with a chromate conversion or hard anodic coating. (Never paint directly on magnesium)

then priming with paint containing not less than 15% by weight of chromate pigment. This should be either strontium chromate or strontium chromate containing up to 10% of barium chromate. Compounds of mercury and lead must not be used in the primer.

They don't mention zinc chromate or etch priming though.

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