[Targa Dude]

Hello Super Man, what I was told prior to powder coating magnesium was in the preperation on the magnesium do not use wire wheels, steel wool or anything that has ferous metals in it. this will contaminate the magnesium and cause corrosion later. Thats why I went out and purchased a 100.00 bead blast cabinet, This was one of the best investments I ever made.
my magnesium parts were powder coated 5 years ago and they still look as good as the day I picked them up. I can recommend a great Powder coating shop in the S.F bay area. just let me know.