PodOne Posted March 22, 2020 Report Share Posted March 22, 2020 Hi all Being stuck at home and bored and instructed "No noise its Mothers Day" or else I thought I give my plating kit a go. Given me some lovely bright zinc plated bits and bobs. The trouble I is when it comes to dipping them into the yellow Passivate after a Nitric Acid dip/wash. The yellow adheres but rubs off tried clear first as instructed in the kit no difference same result. Any plating gurus out there with a suggestion as to what I'm doing wrong? Thanks Andy Quote Link to post Share on other sites
ed_h Posted March 22, 2020 Report Share Posted March 22, 2020 Andy-- I've noticed that if I leave the part in the chromate too long, the coating can rub off. For my bath, about 10 seconds does it. Also, the wet coating can be a little fragile. I bake it at about 140 degF for half an hour. This is for a home brew chromate passivate, so YMMV. Ed Quote Link to post Share on other sites
PodOne Posted March 25, 2020 Author Report Share Posted March 25, 2020 Thanks Ed Had another go this afternoon, put a thicker layer of zinc on the parts, washed, cleaned with brake cleaner then 30sec in the chromate and a final wash. Seemed to "stick" a lot better and give an even coat. Going to let them air dry for a couple of days and see how they turn out. Quote Link to post Share on other sites
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