Nick it works great for zinc removal and/or as a pattern weld etchant! For either use I combine the muriatic acid with a little water too. Follow all safety rules related to acid use, mixing, storage, disposal, etc.
I was taught this method in university level artist blacksmithing courses. Many are unaware that zinc/galvanized can actually remain hidden under a rusty coating too. I automatically test all rusty materials now too as I have had zinc sneak up & bite me on more than one occasion with sickening consequences.
Place item in solution and if even a small amount of zinc is present (seen or unseen) a reaction and fizzing will begin almost immediately. Allow acid bath to continue until ALL fizzing stops, then rinse item in baking soda & water to neutralize.
BE SAFE, NOT SORRY!
I would much rather talk to you than about you!
Hope this info helps!
__________________
"From the origination of ideas, to forging individual elements, to placing the finished piece, my work is as susceptible to failure as to success. Attentiveness to the process is all that's held in balance between the two."
Tom Joyce; Artist blacksmith; Santa Fe, New Mexico
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I do what I can, when I can, the best I can - utilizing whatever I have to work with!
trying-it (AKA: Stan)
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