White Patina on Zinc: A Practical, Useful Workaround

Summary for white patina on zinc Discussion

white patina on zinc is the core question here: the poster wants a uniform white finish for a watch dial that is "somewhere between paint and patina," but cannot use paint because of a resist mask. Ted Mooney, P.E. RET, says that as far as he knows there are no white patinas for zinc. He suggests an indirect route: copper plate the zinc first, then apply a white patina intended for copper or copper alloys. He also notes there is an old 1934 U.S. patent for anodizing zinc, but the excerpt does not say whether that would produce the desired white appearance. The practical takeaway is that a direct white patina on zinc does not appear to be available, so any solution would likely require a different surface treatment or a plated intermediate layer.