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Originally Posted by awdmh
What kind of acid?
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I have had the best luck with some of the commerical phospharic acid products. Now I am use metal prep from a local autobody shop. In WI phosphoric acid seems to be illegal to sell so it is pretty had to findl.
For some reason phospharic acid works nice and slowly on zinc die-cast. I have also used a 20:1 muratic acid dip at room temp, but you really need to get the part out quickly and dried.
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Originally Posted by awdmh
What kind of container do you put the chromate in?
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Now I am using a 3.5 gallon plastic tank.