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Way back as a young'n, my friends and I had fun making bad things with a junior Dr. Frankenstein chemistry set. The pressure sensitive explosive we never could duplicate comes to mind. We hear and read of pickling but not much is presented about how to get, or make pickling juice suitable for our needs. Could someone please post a tutorial for both dry and liquid ferric chloride conversion to pickling juice? I imagine that percentage concentrate is important in the end. Thank you!
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Why do you need a pressure sensitive explosive for? Pickling for? -
I think he's referring to nitric acid. Not very nice stuff, stick with ferric chloride it's rather more benign. You can purchase it premixed or in crystal form, the package will tell you the dilution, but it's not super critical I find. Warming it up and agitation of the solution speeds the etching process up considerably.
If a clear etching solution is desirable you may want to consider Sodium Persulphate instead.
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I don't need an explosive fluid, Steve! That was just an illustration of fun stuff with a chemistry set! The f. chloride I inherited is very dark in the container, so I would like to know what percentage to use to pickle my metal parts. Anyway, I'm going deep!Comment
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You're saying an old used solution is still usable as a pickling solution prior to painting?
I have a Radio Shack bottle that must be over 10-15 years old. Maybe it's ok for this purpose, pickling, have to try it. BUT, due to it'\s age it seems to have lost some of its power to be used to fully etch a PCB. I'm sure it must have a shelf life.Comment
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It ages because of use -- a buildup of oxides polluting the acid. Sure, it's weaker than when first used, but that's an issue an extended immersion time and increased temperature will fix. Stop making a big deal out of this -- your juice is still tangy and great on a salad.
YOU PEOPLE!
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