Homebrew PCBs

Yes it will, but probably not fast as Ferric Chloride. I once had 
a stainless teaspoon sitting in a beaker containing cupric 
chloride etching and it etched a good part of it away over a few 
days. When its long term you need good chemical resistant 
materials. Are you close by to any titanium screw suppliers? :)

You could try coating the screw and its surrounding with a 
solvent based contact adhesive.

milwiron@... wrote:
> Hey All,
> Does anybody know the effects of the cupric chloride etchant solution on
> stainless steel?  I have a few stainless screws in my etching tank that
> ammonium persulfate doesn't touch but I know ferric chloride will slowly eat.
> Thanks,
> Denny
> 
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