Re: gEDA-user: PCM making methods - was - Re: alarm clock update

[John Griessen <john@xxxxxxxxxxxxxx>]

andrewm wrote:
> John Griessen wrote:
>> I'm liking the transparency and low hassle and low toxicity of HCl/H2O2,


> I have been using CuCl for a bit over a year now and all I ever need to 
> do is measure the acid levels and
> density and then top up with HCl or water to keep it in spec.
> 
> Will still stain like FeCl, but you never need to neutralise it or throw 
> anything away.

Thanks for that recipe and experience.  The volume doesn't grow?  Air 
regenerates completely?

What's the rate like?  I'm through 1 oz copper in <7 minutes at 105 deg 
F with  HCl/H2O2 etchant.  Good for groups of proto boards.

John Griessen


-- 
Ecosensory
tinyOS devel on:  ubuntu Linux;   tinyOS v2.0.2;   telosb ecosens1


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