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7.5 Workmanship - The surface of the electroplated article shall be uniform in appearance, free of visible coating defects, such as, blisters, pits, Zinc plating defects (poor quality metal finishing) · 1.Proper Cleanings are done. · 2.Plating thickness is proper (For Zinc 8-12 microns) · 3.Chromating is proper A common problem when coating porous substrate such as zinc-filled primers, zinc silicates, and metal-sprayed coatings. Pinholes can also be caused by incorrect Zinc Plating, Cyanide . Mu copper plated zinc die castings are blistering. there is a defect visible in the panel, does it match what's hap-. Learn more about common electroplating defects and issues including cold shuts and loss of adhesion from Sharretts Plating Company. Read our guide today! -BRAss SoLUTION. For all practical purposes brassing solutions are usually of the cyanide type, containing the cyanides of zinc and copper dissolved in