Homebrew PCBs

No, I'm not sure I want to use Ammonium Persulphate, so I returned it.  Back 
to FeCl.  I think I can manage to avoid spilling any  ..... famous last 
words! :-)

I haven't followed all the CuCl posts, cause I had no intention of using it, 
and am not the type to go chase down this stuff.  But I think I'll go back 
thru the archives now.

Cheers,
-Neil.



On Thursday 22 May 2003 13:52, Stefan Trethan scribbled:
> if you want to keep it "portable" you may try such a cooling container (the
> insulatet box for keeping things cold without active cooling system).
> this has a lid on it.
> but it is best for etchants which can stay there exposed to air and can be
> reused (regenerated) like the cucl with air regeneration.
> (you have read all the cucl posts here?)
>
> but if you want to try, for example one of the hydrogen peroxyde using
> processes i think it is better to have several smaller containers because
> the h2o2 is volatile. if you only use a small amount of etchant you only
> have to replenish a small amount of h2o2 to activate.
>
> well, you have bought Ammonium Persulphate, i never tried this.
> i don't know if it can be reused, is good to spray etc.
>
> i would NOT recommend fe3cl. simply because a tiny drop stains everything.
> i also don't like the etching speed (without suitable heating and
> agitation). i still have some bags of fe3cl here which i never used. (here
> i'm talking about the cheap yellow stuff, not the "sublimate"? was it
> called so?)
>
> are you sure you want to stay with Ammonium Persulphate?
> you want to heat? agitation (bubbles?)?
> having a bubbler on the bottom has resulted in stronger etching on the
> bottom (with cucl).
>
>
> regards
> stefan
>
>
>
>
>
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